Vulnerability-Lookup

alsa-2026:3517

Vulnerability from osv_almalinux

Published

2026-03-02 00:00

Modified

2026-03-05 07:45

Summary

Important: thunderbird security update

Details

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)
firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)
firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 (CVE-2026-2793)
firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771)
firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)
firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software (CVE-2026-2776)
firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)
firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)
firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)
firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)
firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)
firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-2783)
firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)
firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)
firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)
firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)
firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)
firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)
firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)
firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)
firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)
firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 (CVE-2026-2792)
firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)
firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)
firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)
firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)
firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-2760)
firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)
firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)
firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)
firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)
firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)
firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)
firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)
firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component (CVE-2026-2778)
firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)
firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)
firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "thunderbird"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "140.8.0-2.el10_1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Mozilla Thunderbird is a standalone mail and newsgroup client.  \n\nSecurity Fix(es):  \n\n  * libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)\n  * firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)\n  * firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 (CVE-2026-2793)\n  * firefox: Undefined behavior in the DOM: Core \u0026 HTML component (CVE-2026-2771)\n  * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)\n  * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software (CVE-2026-2776)\n  * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)\n  * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)\n  * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)\n  * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)\n  * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)\n  * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-2783)\n  * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)\n  * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)\n  * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)\n  * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)\n  * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)\n  * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)\n  * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)\n  * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)\n  * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)\n  * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 (CVE-2026-2792)\n  * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)\n  * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)\n  * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)\n  * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)\n  * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-2760)\n  * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)\n  * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)\n  * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)\n  * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)\n  * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)\n  * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)\n  * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)\n  * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core \u0026 HTML component (CVE-2026-2778)\n  * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)\n  * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)\n  * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:3517",
  "modified": "2026-03-05T07:45:44Z",
  "published": "2026-03-02T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:3517"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2447"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2757"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2758"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2759"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2760"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2761"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2762"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2763"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2764"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2765"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2766"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2767"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2768"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2769"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2770"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2771"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2772"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2773"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2774"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2775"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2776"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2777"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2778"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2779"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2780"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2781"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2782"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2783"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2784"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2785"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2786"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2787"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2788"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2789"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2790"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2791"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2792"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2793"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2440219"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442284"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442287"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442288"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442290"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442291"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442292"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442294"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442295"
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    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442297"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442298"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442300"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442302"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442304"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442307"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442308"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442309"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442312"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442313"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442314"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442316"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442318"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442319"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442320"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442322"
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    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442324"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442325"
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    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442326"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442327"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442328"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442329"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442331"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442333"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442334"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442335"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442337"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442342"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2442343"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-3517.html"
    }
  ],
  "related": [
    "CVE-2026-2447",
    "CVE-2026-2785",
    "CVE-2026-2793",
    "CVE-2026-2771",
    "CVE-2026-2774",
    "CVE-2026-2776",
    "CVE-2026-2781",
    "CVE-2026-2766",
    "CVE-2026-2769",
    "CVE-2026-2787",
    "CVE-2026-2768",
    "CVE-2026-2783",
    "CVE-2026-2788",
    "CVE-2026-2784",
    "CVE-2026-2759",
    "CVE-2026-2762",
    "CVE-2026-2761",
    "CVE-2026-2777",
    "CVE-2026-2790",
    "CVE-2026-2775",
    "CVE-2026-2763",
    "CVE-2026-2792",
    "CVE-2026-2773",
    "CVE-2026-2786",
    "CVE-2026-2789",
    "CVE-2026-2757",
    "CVE-2026-2760",
    "CVE-2026-2772",
    "CVE-2026-2779",
    "CVE-2026-2767",
    "CVE-2026-2764",
    "CVE-2026-2782",
    "CVE-2026-2765",
    "CVE-2026-2780",
    "CVE-2026-2778",
    "CVE-2026-2758",
    "CVE-2026-2791",
    "CVE-2026-2770"
  ],
  "summary": "Important: thunderbird security update"
}

CVE-2026-2784 (GCVE-0-2026-2784)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-28 03:14

Title

Mitigation bypass in the DOM: Security component

Summary

Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2012984
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

D. Santos

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-2784",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-28T03:13:23.268966Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-288",
                "description": "CWE-288 Authentication Bypass Using an Alternate Path or Channel",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-28T03:14:35.231Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "148",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "140.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "148",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "140.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "D. Santos"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
            }
          ],
          "value": "Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T17:30:36.359Z",
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2012984"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/"
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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      "title": "Mitigation bypass in the DOM: Security component"
    }
  },
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CVE-2026-2793 (GCVE-0-2026-2793)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 14:44

Title

Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148

Summary

Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/buglist.cgi?bug_id=2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Andrew McCreight, Christian Holler

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
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CVE-2026-2777 (GCVE-0-2026-2777)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 14:44

Title

Privilege escalation in the Messaging System component

Summary

Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-269 - Improper Privilege Management

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2015305
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Richard Belisle

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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CVE-2026-2764 (GCVE-0-2026-2764)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

JIT miscompilation, use-after-free in the JavaScript Engine: JIT component

Summary

JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2012608
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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  "containers": {
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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CVE-2026-2763 (GCVE-0-2026-2763)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the JavaScript Engine component

Summary

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2012018
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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            }
          ],
          "value": "Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
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      "title": "Use-after-free in the JavaScript Engine component"
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}

CVE-2026-2772 (GCVE-0-2026-2772)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the Audio/Video: Playback component

Summary

Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014827
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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          "value": "Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic"
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            }
          ],
          "value": "Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2014827"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
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CVE-2026-2771 (GCVE-0-2026-2771)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-11 15:19

Title

Undefined behavior in the DOM: Core & HTML component

Summary

Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-125 - Out-of-bounds Read

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014593
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
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          "lang": "en",
          "value": "Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic"
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            }
          ],
          "value": "Undefined behavior in the DOM: Core \u0026 HTML component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2014593"
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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CVE-2026-2782 (GCVE-0-2026-2782)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 14:44

Title

Privilege escalation in the Netmonitor component

Summary

Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-269 - Improper Privilege Management

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2010743
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Cody

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "attackVector": "NETWORK",
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        "title": "CISA ADP Vulnrichment"
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          "lang": "en",
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        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Privilege escalation in the Netmonitor component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
            }
          ],
          "value": "Privilege escalation in the Netmonitor component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T17:30:33.383Z",
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        "shortName": "mozilla"
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2010743"
        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
      ],
      "title": "Privilege escalation in the Netmonitor component"
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    "cveId": "CVE-2026-2782",
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    "dateReserved": "2026-02-19T15:06:15.435Z",
    "dateUpdated": "2026-02-26T14:44:08.795Z",
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  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
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CVE-2026-2761 (GCVE-0-2026-2761)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 15:53

Title

Sandbox escape in the Graphics: WebRender component

Summary

Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-693 - Protection Mechanism Failure

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2011063
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Oskar L

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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            "cvssV3_1": {
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        {
          "lang": "en",
          "value": "Oskar L"
        }
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          "lang": "en",
          "supportingMedia": [
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              "base64": false,
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            }
          ],
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        }
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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      ],
      "title": "Sandbox escape in the Graphics: WebRender component"
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CVE-2026-2788 (GCVE-0-2026-2788)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Incorrect boundary conditions in the Audio/Video: GMP component

Summary

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014824
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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            }
          ],
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2014824"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
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CVE-2026-2789 (GCVE-0-2026-2789)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the Graphics: ImageLib component

Summary

Use-after-free in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2015179
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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  "containers": {
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      {
        "metrics": [
          {
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              "attackVector": "NETWORK",
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            }
          ],
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        "dateUpdated": "2026-03-06T11:25:55.264Z",
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2015179"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-2766 (GCVE-0-2026-2766)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the JavaScript Engine: JIT component

Summary

Use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2013583
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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CVE-2026-2776 (GCVE-0-2026-2776)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-28 03:19

Title

Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software

Summary

Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2015266
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Sajeeb Lohani

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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          "lang": "en",
          "value": "Sajeeb Lohani"
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            }
          ],
          "value": "Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2015266"
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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CVE-2026-2775 (GCVE-0-2026-2775)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Mitigation bypass in the DOM: HTML Parser component

Summary

Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2015199
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "attackVector": "NETWORK",
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CVE-2026-2758 (GCVE-0-2026-2758)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:32 – Updated: 2026-02-26 15:45

Title

Use-after-free in the JavaScript: GC component

Summary

Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2009608
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Gary Kwong

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
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              "attackVector": "NETWORK",
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          "vendor": "Mozilla",
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            }
          ],
          "value": "Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T17:30:14.017Z",
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2009608"
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CVE-2026-2773 (GCVE-0-2026-2773)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Incorrect boundary conditions in the Web Audio component

Summary

Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014832
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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            }
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CVE-2026-2770 (GCVE-0-2026-2770)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the DOM: Bindings (WebIDL) component

Summary

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014585
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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            }
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CVE-2026-2781 (GCVE-0-2026-2781)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 20:07

Title

Integer overflow in the Libraries component in NSS

Summary

Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2009552
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Clay Ver Valen

Show details on NVD website

JSON

To clipboard

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      {
        "metrics": [
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CVE-2026-2790 (GCVE-0-2026-2790)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 20:20

Title

Same-origin policy bypass in the Networking: JAR component

Summary

Same-origin policy bypass in the Networking: JAR component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-346 - Origin Validation Error

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2008426
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Surya Dev Singh

Show details on NVD website

JSON

To clipboard

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    "adp": [
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        "metrics": [
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CVE-2026-2447 (GCVE-0-2026-2447)

Vulnerability from cvelistv5 – Published: 2026-02-16 14:13 – Updated: 2026-02-22 21:05

Title

Heap buffer overflow in libvpx

Summary

Heap buffer overflow in libvpx. This vulnerability affects Firefox < 147.0.4, Firefox ESR < 140.7.1, Firefox ESR < 115.32.1, Thunderbird < 140.7.2, and Thunderbird < 147.0.2.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 147.0.4 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.7.1 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 115.32.1 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.7.2 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 147.0.2 (custom)

Credits

jayjayjazz

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
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              "attackVector": "NETWORK",
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            }
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CVE-2026-2774 (GCVE-0-2026-2774)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Integer overflow in the Audio/Video component

Summary

Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014883
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
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CVE-2026-2785 (GCVE-0-2026-2785)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:26

Title

Invalid pointer in the JavaScript Engine component

Summary

Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-824 - Access of Uninitialized Pointer

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2013549
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

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  "containers": {
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            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic"
        }
      ],
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        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
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            }
          ],
          "value": "Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-06T11:26:00.375Z",
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-2757 (GCVE-0-2026-2757)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:32 – Updated: 2026-02-26 15:43

Title

Incorrect boundary conditions in the WebRTC: Audio/Video component

Summary

Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1384 - Improper Handling of Physical or Environmental Conditions

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2001637
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Igor Morgenstern

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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        {
          "lang": "en",
          "value": "Igor Morgenstern"
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            }
          ],
          "value": "Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
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CVE-2026-2765 (GCVE-0-2026-2765)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the JavaScript Engine component

Summary

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2013562
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
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            }
          ],
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CVE-2026-2767 (GCVE-0-2026-2767)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 20:10

Title

Use-after-free in the JavaScript: WebAssembly component

Summary

Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2013741
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Sajeeb Lohani

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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            }
          ],
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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    "datePublished": "2026-02-24T13:33:05.551Z",
    "dateReserved": "2026-02-19T15:05:39.633Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-2783 (GCVE-0-2026-2783)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 20:10

Title

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component

Summary

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2010943
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

x0e

Show details on NVD website

JSON

To clipboard

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CVE-2026-2792 (GCVE-0-2026-2792)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 14:44

Title

Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148

Summary

Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/buglist.cgi?bug_id=2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Andrew McCreight, Maurice Dauer, Olli Pettay, Ryan Hunt

Show details on NVD website

JSON

To clipboard

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CVE-2026-2778 (GCVE-0-2026-2778)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-28 03:18

Title

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component

Summary

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2016358
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Sajeeb Lohani

Show details on NVD website

JSON

To clipboard

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CVE-2026-2762 (GCVE-0-2026-2762)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-28 02:25

Title

Integer overflow in the JavaScript: Standard Library component

Summary

Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2011649
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

André Bargull

Show details on NVD website

JSON

To clipboard

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        "dateUpdated": "2026-02-24T17:30:16.322Z",
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
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  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-2780 (GCVE-0-2026-2780)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-09 23:06

Title

Privilege escalation in the Netmonitor component

Summary

Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-269 - Improper Privilege Management

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2007829
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

RyotaK of GMO Flatt Security Inc.

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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              "attackVector": "NETWORK",
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          "lang": "en",
          "value": "RyotaK of GMO Flatt Security Inc."
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            {
              "base64": false,
              "type": "text/html",
              "value": "Privilege escalation in the Netmonitor component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
            }
          ],
          "value": "Privilege escalation in the Netmonitor component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
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}

CVE-2026-2768 (GCVE-0-2026-2768)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 21:05

Title

Sandbox escape in the Storage: IndexedDB component

Summary

Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-693 - Protection Mechanism Failure
CWE-284 - Improper Access Control

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014101
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Sajeeb Lohani

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "integrityImpact": "HIGH",
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        }
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            }
          ],
          "value": "Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
      ],
      "title": "Sandbox escape in the Storage: IndexedDB component"
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}

CVE-2026-2759 (GCVE-0-2026-2759)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:32 – Updated: 2026-02-26 15:47

Title

Incorrect boundary conditions in the Graphics: ImageLib component

Summary

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1384 - Improper Handling of Physical or Environmental Conditions

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2010933
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Steven Julian

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseScore": 9.8,
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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        "providerMetadata": {
          "dateUpdated": "2026-02-26T15:47:54.766Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
        "title": "CISA ADP Vulnrichment"
      }
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          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
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          "vendor": "Mozilla",
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              "versionType": "custom"
            }
          ]
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        {
          "lang": "en",
          "value": "Steven Julian"
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        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
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            }
          ],
          "value": "Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
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        "shortName": "mozilla"
      },
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2010933"
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
      ],
      "title": "Incorrect boundary conditions in the Graphics: ImageLib component"
    }
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  "cveMetadata": {
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    "datePublished": "2026-02-24T13:32:59.173Z",
    "dateReserved": "2026-02-19T15:05:20.862Z",
    "dateUpdated": "2026-02-26T15:47:54.766Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-2787 (GCVE-0-2026-2787)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the DOM: Window and Location component

Summary

Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014560
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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                    "Technical Impact": "total"
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                ],
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              },
              "type": "ssvc"
            }
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          "dateUpdated": "2026-02-26T20:02:41.330Z",
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            }
          ]
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic"
        }
      ],
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
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            }
          ],
          "value": "Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-06T11:25:54.141Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
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    "dateReserved": "2026-02-19T15:06:26.851Z",
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  },
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CVE-2026-2786 (GCVE-0-2026-2786)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:26

Title

Use-after-free in the JavaScript Engine component

Summary

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2013612
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
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              "attackComplexity": "LOW",
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            }
          ],
          "value": "Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
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CVE-2026-2769 (GCVE-0-2026-2769)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:25

Title

Use-after-free in the Storage: IndexedDB component

Summary

Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-416 - Use After Free

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2014550
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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            }
          ],
          "value": "Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
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        },
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
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          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
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      "title": "Use-after-free in the Storage: IndexedDB component"
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    "datePublished": "2026-02-24T13:33:06.912Z",
    "dateReserved": "2026-02-19T15:05:44.343Z",
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  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-2760 (GCVE-0-2026-2760)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-26 15:51

Title

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component

Summary

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-1384 - Improper Handling of Physical or Environmental Conditions

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2011062
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 115.33 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Oskar L

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
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        "title": "CISA ADP Vulnrichment"
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          "vendor": "Mozilla",
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          "lang": "en",
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            }
          ],
          "value": "Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
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        "dateUpdated": "2026-02-24T17:30:15.098Z",
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        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-14/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
      ],
      "title": "Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-2760",
    "datePublished": "2026-02-24T13:33:00.290Z",
    "dateReserved": "2026-02-19T15:05:23.107Z",
    "dateUpdated": "2026-02-26T15:51:08.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-2779 (GCVE-0-2026-2779)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-02-28 03:16

Title

Incorrect boundary conditions in the Networking: JAR component

Summary

Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=1164141
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Alex Mayorga

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-2779",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-28T03:15:18.517530Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-119",
                "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-28T03:16:09.978Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "148",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "140.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "148",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "140.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Alex Mayorga"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
            }
          ],
          "value": "Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T17:30:31.538Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1164141"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
      ],
      "title": "Incorrect boundary conditions in the Networking: JAR component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-2779",
    "datePublished": "2026-02-24T13:33:14.195Z",
    "dateReserved": "2026-02-19T15:06:08.909Z",
    "dateUpdated": "2026-02-28T03:16:09.978Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-2791 (GCVE-0-2026-2791)

Vulnerability from cvelistv5 – Published: 2026-02-24 13:33 – Updated: 2026-03-06 11:26

Title

Mitigation bypass in the Networking: Cache component

Summary

Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=2015220
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…
	https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: unspecified , < 148 (custom)

Mozilla	Firefox ESR	Affected: unspecified , < 140.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 148 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 140.8 (custom)

Credits

Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-2791",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-28T03:10:15.651384Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-288",
                "description": "CWE-288 Authentication Bypass Using an Alternate Path or Channel",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-28T03:10:50.975Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "148",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "140.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "148",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "140.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
            }
          ],
          "value": "Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 140.8, Thunderbird \u003c 148, and Thunderbird \u003c 140.8."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-06T11:26:01.970Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2015220"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-13/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-15/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-16/"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-17/"
        }
      ],
      "title": "Mitigation bypass in the Networking: Cache component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-2791",
    "datePublished": "2026-02-24T13:33:22.237Z",
    "dateReserved": "2026-02-19T15:06:35.590Z",
    "dateUpdated": "2026-03-06T11:26:01.970Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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Tags

Sightings

Nomenclature