Red Hat Security Advisory: thunderbird security update

{
  "id": "0ccd4a7e348706155786a9df8328b920485c138f1ecd8698f36ede5c4823ae05",
  "url": "https://osv.dev/vulnerability/RHSA-2026%3A12264",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Red Hat Security Advisory: thunderbird security update",
    "summary": "Red Hat Security Advisory: thunderbird security update",
    "evidence": "osv:RHSA-2026:12264",
    "products": [
      {
        "name": {
          "value": "thunderbird",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:140.9.1-1.el9_0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "thunderbird-debuginfo",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:140.9.1-1.el9_0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "thunderbird-debugsource",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:140.9.1-1.el9_0",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RHSA-2026:12264",
      "aliases": [
        "RHSA-2026:12264"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:140.9.1-1.el9_0"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird",
            "purl": "pkg:rpm/redhat/thunderbird",
            "ecosystem": "Red Hat:rhel_e4s:9.0::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:12264.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:140.9.1-1.el9_0"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird-debuginfo",
            "purl": "pkg:rpm/redhat/thunderbird-debuginfo",
            "ecosystem": "Red Hat:rhel_e4s:9.0::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:12264.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:140.9.1-1.el9_0"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird-debugsource",
            "purl": "pkg:rpm/redhat/thunderbird-debugsource",
            "ecosystem": "Red Hat:rhel_e4s:9.0::appstream"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:12264.json"
          }
        }
      ],
      "modified": "2026-10-16T10:10:43Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-33416",
        "CVE-2026-33636",
        "CVE-2026-5731",
        "CVE-2026-5732",
        "CVE-2026-5734"
      ],
      "references": [
        "https://access.redhat.com/errata/RHSA-2026:12264",
        "https://access.redhat.com/security/updates/classification/#important",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2451805",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2451819",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2455897",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2455901",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2455908",
        "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_12264.json",
        "https://access.redhat.com/security/cve/CVE-2026-5731",
        "https://www.cve.org/CVERecord?id=CVE-2026-5731",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-5731",
        "https://www.mozilla.org/security/advisories/mfsa2026-27/#CVE-2026-5731",
        "https://www.mozilla.org/security/advisories/mfsa2026-29/#CVE-2026-5731",
        "https://access.redhat.com/security/cve/CVE-2026-5732",
        "https://www.cve.org/CVERecord?id=CVE-2026-5732",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-5732",
        "https://www.mozilla.org/security/advisories/mfsa2026-27/#CVE-2026-5732",
        "https://www.mozilla.org/security/advisories/mfsa2026-29/#CVE-2026-5732",
        "https://access.redhat.com/security/cve/CVE-2026-5734",
        "https://www.cve.org/CVERecord?id=CVE-2026-5734",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-5734",
        "https://www.mozilla.org/security/advisories/mfsa2026-27/#CVE-2026-5734",
        "https://www.mozilla.org/security/advisories/mfsa2026-29/#CVE-2026-5734",
        "https://access.redhat.com/security/cve/CVE-2026-33416",
        "https://www.cve.org/CVERecord?id=CVE-2026-33416",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33416",
        "https://github.com/pnggroup/libpng/commit/23019269764e35ed8458e517f1897bd3c54820eb",
        "https://github.com/pnggroup/libpng/commit/7ea9eea884a2328cc7fdcb3c0c00246a50d90667",
        "https://github.com/pnggroup/libpng/commit/a3a21443ed12bfa1ef46fa0d4fb2b74a0fa34a25",
        "https://github.com/pnggroup/libpng/commit/c1b0318b393c90679e6fa5bc1d329fd5d5012ec1",
        "https://github.com/pnggroup/libpng/pull/824",
        "https://github.com/pnggroup/libpng/security/advisories/GHSA-m4pc-p4q3-4c7j",
        "https://access.redhat.com/security/cve/CVE-2026-33636",
        "https://www.cve.org/CVERecord?id=CVE-2026-33636",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33636",
        "https://github.com/pnggroup/libpng/commit/7734cda20cf1236aef60f3bbd2267c97bbb40869",
        "https://github.com/pnggroup/libpng/commit/aba9f18eba870d14fb52c5ba5d73451349e339c3",
        "https://github.com/pnggroup/libpng/security/advisories/GHSA-wjr5-c57x-95m2"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-33416",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-33636",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-5731",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-5732",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-5734",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 339409,
  "published_at": "2026-05-01T10:22:37+00:00"
}