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alsa-2026:30846
Vulnerability from osv_almalinux
Published
2026-06-29 00:00
Modified
2026-06-29 08:29
Summary
Important: thunderbird security update
Details

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

  • firefox: thunderbird: Sandbox escape in the DOM: Workers component (CVE-2026-12294)
  • firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12313)
  • firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12311)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12290)
  • firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12327)
  • firefox: thunderbird: JIT miscompilation in the DOM: Core & HTML component (CVE-2026-12299)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12329)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12312)
  • firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12302)
  • firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12328)
  • firefox: thunderbird: Incorrect boundary conditions in the Internationalization component (CVE-2026-12330)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12314)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12309)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12310)
  • firefox: thunderbird: Denial-of-service in the Graphics: ImageLib component (CVE-2026-12325)
  • firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-12295)
  • firefox: thunderbird: Privilege escalation in the Graphics: WebRender component (CVE-2026-12289)
  • firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12315)
  • firefox: thunderbird: Sandbox escape in the Security: Process Sandboxing component (CVE-2026-12296)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12306)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12307)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-12297)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12305)
  • firefox: thunderbird: Incorrect boundary conditions in the Web Audio component (CVE-2026-12292)
  • firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12308)
  • firefox: thunderbird: Incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-12324)
  • firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-12304)
  • firefox: thunderbird: Use-after-free in the Networking: HTTP component (CVE-2026-12291)
  • firefox: thunderbird: Memory safety bug fixed in Firefox ESR 140.12 (CVE-2026-12298)

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.

References
https://access.redhat.com/errata/RHSA-2026:30846 ADVISORY
https://access.redhat.com/security/cve/CVE-2026-12289 REPORT
https://access.redhat.com/security/cve/CVE-2026-12290 REPORT
https://access.redhat.com/security/cve/CVE-2026-12291 REPORT
https://access.redhat.com/security/cve/CVE-2026-12292 REPORT
https://access.redhat.com/security/cve/CVE-2026-12294 REPORT
https://access.redhat.com/security/cve/CVE-2026-12295 REPORT
https://access.redhat.com/security/cve/CVE-2026-12296 REPORT
https://access.redhat.com/security/cve/CVE-2026-12297 REPORT
https://access.redhat.com/security/cve/CVE-2026-12298 REPORT
https://access.redhat.com/security/cve/CVE-2026-12299 REPORT
https://access.redhat.com/security/cve/CVE-2026-12302 REPORT
https://access.redhat.com/security/cve/CVE-2026-12304 REPORT
https://access.redhat.com/security/cve/CVE-2026-12305 REPORT
https://access.redhat.com/security/cve/CVE-2026-12306 REPORT
https://access.redhat.com/security/cve/CVE-2026-12307 REPORT
https://access.redhat.com/security/cve/CVE-2026-12308 REPORT
https://access.redhat.com/security/cve/CVE-2026-12309 REPORT
https://access.redhat.com/security/cve/CVE-2026-12310 REPORT
https://access.redhat.com/security/cve/CVE-2026-12311 REPORT
https://access.redhat.com/security/cve/CVE-2026-12312 REPORT
https://access.redhat.com/security/cve/CVE-2026-12313 REPORT
https://access.redhat.com/security/cve/CVE-2026-12314 REPORT
https://access.redhat.com/security/cve/CVE-2026-12315 REPORT
https://access.redhat.com/security/cve/CVE-2026-12324 REPORT
https://access.redhat.com/security/cve/CVE-2026-12325 REPORT
https://access.redhat.com/security/cve/CVE-2026-12327 REPORT
https://access.redhat.com/security/cve/CVE-2026-12328 REPORT
https://access.redhat.com/security/cve/CVE-2026-12329 REPORT
https://access.redhat.com/security/cve/CVE-2026-12330 REPORT
https://bugzilla.redhat.com/2489207 REPORT
https://bugzilla.redhat.com/2489208 REPORT
https://bugzilla.redhat.com/2489209 REPORT
https://bugzilla.redhat.com/2489210 REPORT
https://bugzilla.redhat.com/2489211 REPORT
https://bugzilla.redhat.com/2489212 REPORT
https://bugzilla.redhat.com/2489214 REPORT
https://bugzilla.redhat.com/2489215 REPORT
https://bugzilla.redhat.com/2489217 REPORT
https://bugzilla.redhat.com/2489218 REPORT
https://bugzilla.redhat.com/2489220 REPORT
https://bugzilla.redhat.com/2489221 REPORT
https://bugzilla.redhat.com/2489223 REPORT
https://bugzilla.redhat.com/2489224 REPORT
https://bugzilla.redhat.com/2489225 REPORT
https://bugzilla.redhat.com/2489226 REPORT
https://bugzilla.redhat.com/2489229 REPORT
https://bugzilla.redhat.com/2489231 REPORT
https://bugzilla.redhat.com/2489232 REPORT
https://bugzilla.redhat.com/2489233 REPORT
https://bugzilla.redhat.com/2489234 REPORT
https://bugzilla.redhat.com/2489235 REPORT
https://bugzilla.redhat.com/2489236 REPORT
https://bugzilla.redhat.com/2489237 REPORT
https://bugzilla.redhat.com/2489239 REPORT
https://bugzilla.redhat.com/2489240 REPORT
https://bugzilla.redhat.com/2489243 REPORT
https://bugzilla.redhat.com/2489244 REPORT
https://bugzilla.redhat.com/2489248 REPORT
https://errata.almalinux.org/10/ALSA-2026-30846.html ADVISORY

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "thunderbird"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "140.12.0-1.el10_2.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Mozilla Thunderbird is a standalone mail and newsgroup client.  \n\nSecurity Fix(es):  \n\n  * firefox: thunderbird: Sandbox escape in the DOM: Workers component (CVE-2026-12294)\n  * firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12313)\n  * firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12311)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12290)\n  * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12327)\n  * firefox: thunderbird: JIT miscompilation in the DOM: Core \u0026 HTML component (CVE-2026-12299)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12329)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12312)\n  * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12302)\n  * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12328)\n  * firefox: thunderbird: Incorrect boundary conditions in the Internationalization component (CVE-2026-12330)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12314)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12309)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12310)\n  * firefox: thunderbird: Denial-of-service in the Graphics: ImageLib component (CVE-2026-12325)\n  * firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-12295)\n  * firefox: thunderbird: Privilege escalation in the Graphics: WebRender component (CVE-2026-12289)\n  * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12315)\n  * firefox: thunderbird: Sandbox escape in the Security: Process Sandboxing component (CVE-2026-12296)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12306)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12307)\n  * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-12297)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12305)\n  * firefox: thunderbird: Incorrect boundary conditions in the Web Audio component (CVE-2026-12292)\n  * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12308)\n  * firefox: thunderbird: Incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-12324)\n  * firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-12304)\n  * firefox: thunderbird: Use-after-free in the Networking: HTTP component (CVE-2026-12291)\n  * firefox: thunderbird: Memory safety bug fixed in Firefox ESR 140.12 (CVE-2026-12298)\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-2026:30846",
  "modified": "2026-06-29T08:29:54Z",
  "published": "2026-06-29T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:30846"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12289"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12290"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12291"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12292"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12294"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12295"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12296"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12297"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12298"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12299"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12302"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12304"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12305"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12306"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12307"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12308"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12309"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12310"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12311"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12312"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12313"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12314"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12315"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12324"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12325"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12327"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12328"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12329"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12330"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489207"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489208"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489209"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489210"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489211"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489212"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489214"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489215"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489217"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489218"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489220"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489221"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489223"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489224"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489225"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489226"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489229"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489231"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489232"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489233"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489234"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489235"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489236"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489237"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489239"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489240"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489243"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489244"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2489248"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-30846.html"
    }
  ],
  "related": [
    "CVE-2026-12294",
    "CVE-2026-12313",
    "CVE-2026-12311",
    "CVE-2026-12290",
    "CVE-2026-12327",
    "CVE-2026-12299",
    "CVE-2026-12329",
    "CVE-2026-12312",
    "CVE-2026-12302",
    "CVE-2026-12328",
    "CVE-2026-12330",
    "CVE-2026-12314",
    "CVE-2026-12309",
    "CVE-2026-12310",
    "CVE-2026-12325",
    "CVE-2026-12295",
    "CVE-2026-12289",
    "CVE-2026-12315",
    "CVE-2026-12296",
    "CVE-2026-12306",
    "CVE-2026-12307",
    "CVE-2026-12297",
    "CVE-2026-12305",
    "CVE-2026-12292",
    "CVE-2026-12308",
    "CVE-2026-12324",
    "CVE-2026-12304",
    "CVE-2026-12291",
    "CVE-2026-12298"
  ],
  "summary": "Important: thunderbird security update"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.

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