Vulnerability-Lookup

CVE-2026-63382 (GCVE-0-2026-63382)

Vulnerability from cvelistv5 – Published: 2026-08-20 17:51 – Updated: 2026-08-20 19:33

Title

libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling

Summary

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttp_find_header can select only the first header, evhttp_check_transfer_encoding_ was absent so the previous whole-string comparison fails to recognize valid lists ending in chunked, and evhttp_handle_chunked_read uses EVBUFFER_EOL_CRLF rather than EVBUFFER_EOL_CRLF_STRICT, accepting bare LF chunk terminators. When libevent is deployed behind a proxy that frames the same request differently, an unauthenticated remote attacker can desynchronize request boundaries and smuggle a second request, potentially bypassing access controls or poisoning caches. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 19:33 UTC

CWE

CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Assigner

GitHub_M mitre root

References

7 references

URL	Tags
https://github.com/libevent/libevent/security/adv…	x_refsource_CONFIRM
https://github.com/libevent/libevent/commit/10abb…	x_refsource_MISC
https://github.com/libevent/libevent/commit/5119c…	x_refsource_MISC
https://github.com/libevent/libevent/commit/83ba6…	x_refsource_MISC
https://github.com/libevent/libevent/commit/ac387…	x_refsource_MISC
https://github.com/libevent/libevent/releases/tag…	x_refsource_MISC
https://github.com/libevent/libevent/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
libevent	libevent	Affected: >= 2.2.0-alpha, < 2.2.2-alpha Affected: < 2.1.13	guessed

Show details on NVD website

JSON

To clipboard

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alsa-2026:67908

Vulnerability from osv_almalinux

Published

2026-09-16 00:00

Modified

2026-09-16 13:25

Summary

Important: libevent security update

Details

The libevent packages provide an abstract asynchronous event notification library.

Security Fix(es):

libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)
libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)
libevent: Libevent: Denial of Service via integer conversion error in evtag_unmarshal_header (CVE-2026-63384)
libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)
libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)
libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)

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

URL

Type

	https://access.redhat.com/errata/RHSA-2026:67908	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-63382	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63383	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63384	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63385	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63387	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63388	REPORT
	https://bugzilla.redhat.com/2520654	REPORT
	https://bugzilla.redhat.com/2520655	REPORT
	https://bugzilla.redhat.com/2520658	REPORT
	https://bugzilla.redhat.com/2520661	REPORT
	https://bugzilla.redhat.com/2520666	REPORT
	https://errata.almalinux.org/8/ALSA-2026-67908.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "libevent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
              "fixed": "2.1.8-11.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
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      "ranges": [
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            {
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          "type": "ECOSYSTEM"
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    }
  ],
  "details": "The libevent packages provide an abstract asynchronous event notification library.  \n\nSecurity Fix(es):  \n\n  * libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)\n  * libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)\n  * libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header` (CVE-2026-63384)\n  * libevent ev[http:](http:) Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)\n  * libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)\n  * libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)\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-2026:67908",
  "modified": "2026-09-16T13:25:56Z",
  "published": "2026-09-16T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:67908"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63382"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63383"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63384"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63385"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63387"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63388"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520654"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520655"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520658"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520661"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520666"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-67908.html"
    }
  ],
  "related": [
    "CVE-2026-63383",
    "CVE-2026-63387",
    "CVE-2026-63384",
    "CVE-2026-63382",
    "CVE-2026-63388",
    "CVE-2026-63385"
  ],
  "summary": "Important: libevent security update"
}

alsa-2026:67909

Vulnerability from osv_almalinux

Published

2026-09-16 00:00

Modified

2026-09-17 09:34

Summary

Important: libevent security update

Details

The libevent packages provide an abstract asynchronous event notification library.

Security Fix(es):

libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)
libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)
libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)
libevent: Libevent: Denial of Service via integer conversion error in evtag_unmarshal_header (CVE-2026-63384)
libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)
libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)
libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)
libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)

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

URL

Type

	https://access.redhat.com/errata/RHSA-2026:67909	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-63379	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63381	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63382	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63383	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63384	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63385	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63387	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63388	REPORT
	https://bugzilla.redhat.com/2520654	REPORT
	https://bugzilla.redhat.com/2520655	REPORT
	https://bugzilla.redhat.com/2520657	REPORT
	https://bugzilla.redhat.com/2520658	REPORT
	https://bugzilla.redhat.com/2520661	REPORT
	https://bugzilla.redhat.com/2520666	REPORT
	https://bugzilla.redhat.com/2520667	REPORT
	https://errata.almalinux.org/10/ALSA-2026-67909.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libevent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libevent-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libevent-doc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The libevent packages provide an abstract asynchronous event notification library.  \n\nSecurity Fix(es):  \n\n  * libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)\n  * libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)\n  * libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)\n  * libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header` (CVE-2026-63384)\n  * libevent ev[http:](http:) Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)\n  * libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)\n  * libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)\n  * libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)\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-2026:67909",
  "modified": "2026-09-17T09:34:09Z",
  "published": "2026-09-16T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:67909"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63379"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63381"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63382"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63383"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63384"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63385"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63387"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63388"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520654"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520655"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520657"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520658"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520661"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520666"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520667"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-67909.html"
    }
  ],
  "related": [
    "CVE-2026-63383",
    "CVE-2026-63387",
    "CVE-2026-63381",
    "CVE-2026-63384",
    "CVE-2026-63382",
    "CVE-2026-63388",
    "CVE-2026-63385",
    "CVE-2026-63379"
  ],
  "summary": "Important: libevent security update"
}

alsa-2026:67910

Vulnerability from osv_almalinux

Published

2026-09-16 00:00

Modified

2026-09-17 09:34

Summary

Important: libevent security update

Details

The libevent packages provide an abstract asynchronous event notification library.

Security Fix(es):

libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)
libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)
libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)
libevent: Libevent: Denial of Service via integer conversion error in evtag_unmarshal_header (CVE-2026-63384)
libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)
libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)
libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)
libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)

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

URL

Type

	https://access.redhat.com/errata/RHSA-2026:67910	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-63379	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63381	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63382	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63383	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63384	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63385	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63387	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63388	REPORT
	https://bugzilla.redhat.com/2520654	REPORT
	https://bugzilla.redhat.com/2520655	REPORT
	https://bugzilla.redhat.com/2520657	REPORT
	https://bugzilla.redhat.com/2520658	REPORT
	https://bugzilla.redhat.com/2520661	REPORT
	https://bugzilla.redhat.com/2520666	REPORT
	https://bugzilla.redhat.com/2520667	REPORT
	https://errata.almalinux.org/9/ALSA-2026-67910.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libevent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libevent-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libevent-doc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The libevent packages provide an abstract asynchronous event notification library.  \n\nSecurity Fix(es):  \n\n  * libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)\n  * libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)\n  * libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)\n  * libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header` (CVE-2026-63384)\n  * libevent ev[http:](http:) Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)\n  * libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)\n  * libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)\n  * libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)\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-2026:67910",
  "modified": "2026-09-17T09:34:32Z",
  "published": "2026-09-16T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:67910"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63379"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63381"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63382"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63383"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63384"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63385"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63387"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63388"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520654"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520655"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520657"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520658"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520661"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520666"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520667"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-67910.html"
    }
  ],
  "related": [
    "CVE-2026-63383",
    "CVE-2026-63387",
    "CVE-2026-63381",
    "CVE-2026-63384",
    "CVE-2026-63382",
    "CVE-2026-63388",
    "CVE-2026-63385",
    "CVE-2026-63379"
  ],
  "summary": "Important: libevent security update"
}

BDU:2026-12659 (CVE-2026-63382)

Vulnerability from fstec – Published: 2026-08-26 – Updated: 2026-08-26 – View on bdu.fstec.ru Exploit publicly available Fixed

Title

Уязвимость функции evhttp_find_header() HTTP-парсера evhttp библиотеки асинхронного уведомления событий Libevent, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции evhttp_find_header() HTTP-парсера evhttp библиотеки асинхронного уведомления событий Libevent связана с недостатками обработки HTTP-запросов. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании

Severity

9.7 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:C/I:C/A:P

9.4 (Critical) CVSS 3.1


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

9.2 (Critical) CVSS 4.0


                      
                        CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Spoofing

Incidents

Being clarified

Remediation

Software update

CWE

CWE-444 - Непоследовательная интерпретация HTTP-запросов ('Контрабанда HTTP-запросов')

Aliases

CVE-2026-63382, GHSA-Q39V-W2G7-GR8J

References

3 references

URL
https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j
https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable
https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha

Impacted products

1 product from 1 vendor

Vendors

Libevent project

Products

Libevent

Versions

до 2.1.12 включительно (Libevent), до 2.2.1-alpha включительно (Libevent)

Product types

Application software

Mitigations

Использование рекомендаций производителя: https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:C/I:C/A:P",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
  "CVSS 4.0": "AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N",
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Libevent project",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u0434\u043e 2.1.12 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Libevent), \u0434\u043e 2.2.1-alpha \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Libevent)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\nhttps://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j\nhttps://github.com/libevent/libevent/releases/tag/release-2.1.13-stable\nhttps://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "01.07.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "26.08.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "26.08.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-12659",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-63382, GHSA-q39v-w2g7-gr8j",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Libevent",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 evhttp_find_header() HTTP-\u043f\u0430\u0440\u0441\u0435\u0440\u0430 evhttp \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0433\u043e \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u044f \u0441\u043e\u0431\u044b\u0442\u0438\u0439 Libevent, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0446\u0438\u044f HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 (\u0027\u041a\u043e\u043d\u0442\u0440\u0430\u0431\u0430\u043d\u0434\u0430 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432\u0027) (CWE-444)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 evhttp_find_header() HTTP-\u043f\u0430\u0440\u0441\u0435\u0440\u0430 evhttp \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0433\u043e \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u044f \u0441\u043e\u0431\u044b\u0442\u0438\u0439 Libevent \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041f\u043e\u0434\u043c\u0435\u043d\u0430 \u043f\u0440\u0438 \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j\nhttps://github.com/libevent/libevent/releases/tag/release-2.1.13-stable\nhttps://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-444",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9,7)\n\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9,4)\n\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u043e\u0446\u0435\u043d\u043a\u0430 CVSS 4.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9,2)"
}

FKIE_CVE-2026-63382

Vulnerability from fkie_nvd - Published: 2026-08-20 18:16 - Updated: 2026-09-09 21:19

Severity

9.2 (Critical) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/libevent/libevent/commit/10abb34b8dc3e1184de315dd261ce4b77563cda6
	security-advisories@github.com	https://github.com/libevent/libevent/commit/5119ceb00557bf007f9065709e852686f3c0bb6e
	security-advisories@github.com	https://github.com/libevent/libevent/commit/83ba67373032334559b82409db035dd8c3cc1660
	security-advisories@github.com	https://github.com/libevent/libevent/commit/ac38703b2d312200c4f967f02936af0118d384a0
	security-advisories@github.com	https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable
	security-advisories@github.com	https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha
	security-advisories@github.com	https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libevent",
          "vendor": "libevent",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.2.0-alpha, \u003c 2.2.2-alpha"
            },
            {
              "status": "affected",
              "version": "\u003c 2.1.13"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttp_find_header can select only the first header, evhttp_check_transfer_encoding_ was absent so the previous whole-string comparison fails to recognize valid lists ending in chunked, and evhttp_handle_chunked_read uses EVBUFFER_EOL_CRLF rather than EVBUFFER_EOL_CRLF_STRICT, accepting bare LF chunk terminators. When libevent is deployed behind a proxy that frames the same request differently, an unauthenticated remote attacker can desynchronize request boundaries and smuggle a second request, potentially bypassing access controls or poisoning caches. This issue is fixed in versions 2.1.13 and 2.2.2-alpha."
    }
  ],
  "id": "CVE-2026-63382",
  "lastModified": "2026-09-09T21:19:49.197",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63382",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-20T19:33:43.608585Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-20T18:16:35.700",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/commit/10abb34b8dc3e1184de315dd261ce4b77563cda6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/commit/5119ceb00557bf007f9065709e852686f3c0bb6e"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/commit/83ba67373032334559b82409db035dd8c3cc1660"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/commit/ac38703b2d312200c4f967f02936af0118d384a0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

oesa-2026-3268

Vulnerability from osv_openeuler

Published

2026-08-07 02:42

Modified

2026-08-07 02:42

Summary

libevent security update

Details

Libevent additionally provides a sophisticated framework for buffered network IO, with support for sockets, filters, rate-limiting, SSL, zero-copy file transmission, and IOCP. Libevent includes support for several useful protocols, including DNS, HTTP, and a minimal RPC framewor.

Security Fix(es):

The updated packages fix some security vulnerabilities. libevent is a lightweight event notification library used for handling event loops and callback mechanisms, widely used in network applications.(CVE-2026-63379)

The updated packages fix some security vulnerabilities affecting the libevent library.(CVE-2026-63381)

The updated packages fix some security vulnerabilities.(CVE-2026-63382)

The updated packages fix some security vulnerabilities.(CVE-2026-63383)

The updated packages fix some security vulnerabilities.(CVE-2026-63384)

The updated packages fix some security vulnerabilities.(CVE-2026-63385)

The updated packages fix some security vulnerabilities.(CVE-2026-63387)

The updated packages fix some security vulnerabilities.(CVE-2026-63388)

Severity

8.4 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63379	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63381	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63382	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63383	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63384	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63385	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63387	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63388	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libevent-2.1.12-17.oe2403sp4.aarch64.rpm",
          "libevent-debuginfo-2.1.12-17.oe2403sp4.aarch64.rpm",
          "libevent-debugsource-2.1.12-17.oe2403sp4.aarch64.rpm",
          "libevent-devel-2.1.12-17.oe2403sp4.aarch64.rpm"
        ],
        "src": [
          "libevent-2.1.12-17.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "libevent-2.1.12-17.oe2403sp4.x86_64.rpm",
          "libevent-debuginfo-2.1.12-17.oe2403sp4.x86_64.rpm",
          "libevent-debugsource-2.1.12-17.oe2403sp4.x86_64.rpm",
          "libevent-devel-2.1.12-17.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "libevent",
        "purl": "pkg:rpm/openEuler/libevent\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.12-17.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libevent-2.1.12-7.oe2003sp4.aarch64.rpm",
          "libevent-debuginfo-2.1.12-7.oe2003sp4.aarch64.rpm",
          "libevent-debugsource-2.1.12-7.oe2003sp4.aarch64.rpm",
          "libevent-devel-2.1.12-7.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "libevent-2.1.12-7.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "libevent-2.1.12-7.oe2003sp4.x86_64.rpm",
          "libevent-debuginfo-2.1.12-7.oe2003sp4.x86_64.rpm",
          "libevent-debugsource-2.1.12-7.oe2003sp4.x86_64.rpm",
          "libevent-devel-2.1.12-7.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "libevent",
        "purl": "pkg:rpm/openEuler/libevent\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.12-7.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libevent-2.1.12-11.oe2203sp4.aarch64.rpm",
          "libevent-debuginfo-2.1.12-11.oe2203sp4.aarch64.rpm",
          "libevent-debugsource-2.1.12-11.oe2203sp4.aarch64.rpm",
          "libevent-devel-2.1.12-11.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "libevent-2.1.12-11.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "libevent-2.1.12-11.oe2203sp4.x86_64.rpm",
          "libevent-debuginfo-2.1.12-11.oe2203sp4.x86_64.rpm",
          "libevent-debugsource-2.1.12-11.oe2203sp4.x86_64.rpm",
          "libevent-devel-2.1.12-11.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "libevent",
        "purl": "pkg:rpm/openEuler/libevent\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.12-11.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libevent-2.1.12-17.oe2403sp1.aarch64.rpm",
          "libevent-debuginfo-2.1.12-17.oe2403sp1.aarch64.rpm",
          "libevent-debugsource-2.1.12-17.oe2403sp1.aarch64.rpm",
          "libevent-devel-2.1.12-17.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "libevent-2.1.12-17.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "libevent-2.1.12-17.oe2403sp1.x86_64.rpm",
          "libevent-debuginfo-2.1.12-17.oe2403sp1.x86_64.rpm",
          "libevent-debugsource-2.1.12-17.oe2403sp1.x86_64.rpm",
          "libevent-devel-2.1.12-17.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "libevent",
        "purl": "pkg:rpm/openEuler/libevent\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.12-17.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libevent-2.1.12-17.oe2403sp3.aarch64.rpm",
          "libevent-debuginfo-2.1.12-17.oe2403sp3.aarch64.rpm",
          "libevent-debugsource-2.1.12-17.oe2403sp3.aarch64.rpm",
          "libevent-devel-2.1.12-17.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "libevent-2.1.12-17.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "libevent-2.1.12-17.oe2403sp3.x86_64.rpm",
          "libevent-debuginfo-2.1.12-17.oe2403sp3.x86_64.rpm",
          "libevent-debugsource-2.1.12-17.oe2403sp3.x86_64.rpm",
          "libevent-devel-2.1.12-17.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "libevent",
        "purl": "pkg:rpm/openEuler/libevent\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.12-17.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Libevent additionally provides a sophisticated framework for buffered network IO, with support for sockets, filters, rate-limiting, SSL, zero-copy file transmission, and IOCP. Libevent includes support for several useful protocols, including DNS, HTTP, and a minimal RPC framewor.\r\n\r\nSecurity Fix(es):\n\nThe updated packages fix some security vulnerabilities. libevent is a lightweight event notification library used for handling event loops and callback mechanisms, widely used in network applications.(CVE-2026-63379)\n\nThe updated packages fix some security vulnerabilities affecting the libevent library.(CVE-2026-63381)\n\nThe updated packages fix some security vulnerabilities.(CVE-2026-63382)\n\nThe updated packages fix some security vulnerabilities.(CVE-2026-63383)\n\nThe updated packages fix some security vulnerabilities.(CVE-2026-63384)\n\nThe updated packages fix some security vulnerabilities.(CVE-2026-63385)\n\nThe updated packages fix some security vulnerabilities.(CVE-2026-63387)\n\nThe updated packages fix some security vulnerabilities.(CVE-2026-63388)",
  "id": "OESA-2026-3268",
  "modified": "2026-08-07T02:42:54Z",
  "published": "2026-08-07T02:42:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3268"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63379"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63381"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63382"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63383"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63384"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63385"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63387"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63388"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libevent security update",
  "upstream": [
    "CVE-2026-63379",
    "CVE-2026-63381",
    "CVE-2026-63382",
    "CVE-2026-63383",
    "CVE-2026-63384",
    "CVE-2026-63385",
    "CVE-2026-63387",
    "CVE-2026-63388"
  ]
}

RHSA-2026:63388

Vulnerability from csaf_redhat - Published: 2026-09-03 22:19 - Updated: 2026-09-16 18:34

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-63382.

CVE-2026-63382

A flaw was found in libevent. The evhttp parser in libevent's http.c component inconsistently handles HTTP Transfer-Encoding headers and chunked framing. This inconsistency allows an unauthenticated remote attacker to desynchronize request boundaries when libevent is used behind a proxy. Successful exploitation could lead to request smuggling, potentially bypassing access controls or poisoning caches.

7.7 (High)


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

Fixed: 4 products

https://access.redhat.com/errata/RHSA-2026:63388

Open the full advisory

RHSA-2026:67908

Vulnerability from csaf_redhat - Published: 2026-09-16 12:30 - Updated: 2026-09-16 23:35

Summary

Red Hat Security Advisory: libevent security update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2026-63382.

CVE-2026-63382

7.7 (High)


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

Fixed: 32 products

https://access.redhat.com/errata/RHSA-2026:67908

Open the full advisory

RHSA-2026:67909

Vulnerability from csaf_redhat - Published: 2026-09-16 12:36 - Updated: 2026-09-16 23:35

Summary

Red Hat Security Advisory: libevent security update

Severity

Important

Scope

8 vulnerabilities in this advisory, including CVE-2026-63382.

CVE-2026-63382

7.7 (High)


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

Fixed: 26 products

https://access.redhat.com/errata/RHSA-2026:67909

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-63382 (GCVE-0-2026-63382)

Vulnerability from osv_almalinux

Vulnerability from osv_almalinux

Vulnerability from osv_almalinux

BDU:2026-12659 (CVE-2026-63382)

Vulnerability from osv_openeuler

Tags

Sightings

Nomenclature

Related by attack behaviour