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ALSA-2026:67129 — Important: firefox security update

Affected: AlmaLinux:10: firefox

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

* firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365) * firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874) * firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121) * firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145) * firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119) * firefox: Use-after-free in the Audio/Video component (CVE-2026-84120) * firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131) * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-84124) * firefox: Use-after-free in the Audio/Video component (CVE-2026-84122) * firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)

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.

certfr-2026-avi-1106 — De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Certaines d'entre elles permettent à un atta…

certfr-2026-avi-1106

fkie_cve-2026-84131

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

GHSA-8v78-cgm6-v8h8

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.

OESA-2026-3789 — firefox security update

Affected: openEuler:24.03-LTS-SP1: firefox

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global moz_debug_prefix /lib/debug %global moz_debug_dir /lib/debug/ %global uname_m %(uname -m) %global symbols_file_name -.en-US.-%(uname.crashreporter-symbols.zip %global symbols_file_path /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip %global _find_debuginfo_opts -p /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip -o debugcrashreporter.list %global crashreporter_pkg_name mozilla-crashreporter--debuginfo Security Fix(es):

Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 153.(CVE-2026-16365)

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154 and Thunderbird 154.(CVE-2026-75874)

Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84119)

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84120)

Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.(CVE-2026-84121)

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, and Firefox…

openSUSE-SU-2026:11666-1 — firefox-esr-153.2.0-1.1 on GA media

firefox-esr-153.2.0-1.1 on GA media

RHSA-2026:73130 — Red Hat Security Advisory: thunderbird security update

firefox: thunderbird: Privilege escalation in the DOM: Workers component firefox: thunderbird: Sandbox escape in the Remote Settings Client component firefox: Sandbox escape due to use-after-free in the DOM: Navigation component firefox: Use-after-free in the Audio/Video component firefox: Sandbox escape due to use-after-free in the DOM: Security component firefox: Use-after-free in the Audio/Video component firefox: Use-after-free in the DOM: Core & HTML component firefox: Privilege escalation due to invalid pointer in the Graphics component firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 thunderbird: Uninitialized memory in MIME parsing thunderbird: One byte overflow read in mail parser thunderbird: Information disclosure due to malicious IMAP server response firefox: thunderbird: Use-after-free in the Audio/Video: Web Codecs component firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component firefox: thun…

RLSA-2026:67129 — Important: firefox security update

Affected: Rocky Linux:10: firefox

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

* firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365)

* firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874)

* firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121)

* firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145)

* firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119)

* firefox: Use-after-free in the Audio/Video component (CVE-2026-84120)

* firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131)

* firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-84124)

* firefox: Use-after-free in the Audio/Video component (CVE-2026-84122)

* firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)

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.

SUSE-SU-2026:23784-1 — Security update for MozillaFirefox

Security update for MozillaFirefox

UBUNTU-CVE-2026-84131

Affected: Ubuntu:18.04:LTS: mozjs52, Ubuntu:18.04:LTS: mozjs38, Ubuntu:20.04:LTS: mozjs68, Ubuntu:20.04:LTS: mozjs52, Ubuntu:22.04:LTS: mozjs102, Ubuntu:22.04:LTS: mozjs78, Ubuntu:22.04:LTS: mozjs91, Ubuntu:22.04:LTS: thunderbird, Ubuntu:24.04:LTS: mozjs102, Ubuntu:24.04:LTS: mozjs115