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CriticalFix available

firefox security update

Type: advisorySource: OSV1 source record

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. Security Fix(es): Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.(CVE-2026-92005) Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.(CVE-2026-92006) Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.(CVE-2026-92007) Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.(CVE-2026-92008) Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.(CVE-2026-92009) Privilege escalation due to incorrect boun

Announced Group revision 1
Original source ↗

OESA-2026-4123

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:OESA-2026-4123

firefox

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
140.16.0-1.oe2403sp4

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "140.16.0-1.oe2403sp4"
          }
        ]
      }
    ],
    "package": {
      "name": "firefox",
      "purl": "pkg:rpm/openEuler/firefox&distro=openEuler-24.03-LTS-SP4",
      "ecosystem": "openEuler:24.03-LTS-SP4"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4123.json"
    },
    "ecosystem_specific": {
      "src": [
        "firefox-140.16.0-1.oe2403sp4.src.rpm"
      ],
      "x86_64": [
        "firefox-140.16.0-1.oe2403sp4.x86_64.rpm",
        "firefox-debuginfo-140.16.0-1.oe2403sp4.x86_64.rpm",
        "firefox-debugsource-140.16.0-1.oe2403sp4.x86_64.rpm"
      ],
      "aarch64": [
        "firefox-140.16.0-1.oe2403sp4.aarch64.rpm",
        "firefox-debuginfo-140.16.0-1.oe2403sp4.aarch64.rpm",
        "firefox-debugsource-140.16.0-1.oe2403sp4.aarch64.rpm"
      ]
    }
  }
]

Publisher severity

critical

Source reference: /database_specific/severity

Event
#14710 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. OESA-2026-4123 · Revision 1Source updated