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ALSA-2026:47101 — 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: Site isolation issue in the DOM: Navigation component (CVE-2026-15719) * firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-15718) * firefox: thunderbird: Mitigation bypass in the Enterprise Policies component (CVE-2026-16390) * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component (CVE-2026-16350) * firefox: thunderbird: Information disclosure in the Storage: IndexedDB component (CVE-2026-16391) * firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-16375) * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-16356) * firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-16363) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153 (CVE-2026-16412) * firefox: thunderbird: Same-origin policy bypass in the Networking: DNS component (CVE-2026-16381) * firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-16355) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13 (CVE-2026-16361) * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-…

certfr-2026-avi-0910 — De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Certaines d'entre elles permettent à un atta…

certfr-2026-avi-0910

EUVD-2026-339701

fkie_cve-2026-16391

Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

GHSA-jvcf-79h8-93pm

Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

OESA-2026-3195 — thunderbird security update

Affected: openEuler:24.03-LTS-SP4: thunderbird

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fix(es):

The code to parse MIME headers for display when forwarding a message (if the setting to view all headers was enabled) had an off-by-one error, allowing a single byte to be read from the memory after the buffer for the headers, and potentially crashing Thunderbird. This vulnerability was fixed in Thunderbird 153 and Thunderbird 140.13.(CVE-2026-14899)

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.(CVE-2026-15718)

Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.(CVE-2026-16349)

Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.(CVE-2026-16350)

Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbi…

openSUSE-SU-2026:11329-1 — firefox-esr-140.13.0-1.1 on GA media

firefox-esr-140.13.0-1.1 on GA media

RHSA-2026:53444 — Red Hat Security Advisory: thunderbird security update

thunderbird: Off-by-one out of bounds read in MIME header parser for forwarding firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component firefox: thunderbird: Site isolation issue in the DOM: Navigation component firefox: thunderbird: Same-origin policy bypass in the DOM: Navigation component firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component firefox: thunderbird: Sandbox escape due to use-after-free in the DOM: Navigation component firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component firefox: thunderbird: Invalid pointer in the DOM: Bindings (WebIDL) component firefox: thunderbird: Information disclosure in the Graphics: ImageLib component firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component firefox: thunderbird: Incorrect boundary conditions in the Graphics component firefox: thunderbird: Site isolation issue in the Graphics: WebRender component firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: GMP component firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13 firefox: thunderbird: Use-after-free in the WebRTC: Audio/Video component firefox: thunderbird: JIT miscompilation in the Ja…

RLSA-2026:47101 — 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: Site isolation issue in the DOM: Navigation component (CVE-2026-15719)

* firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-15718)

* firefox: thunderbird: Mitigation bypass in the Enterprise Policies component (CVE-2026-16390)

* firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component (CVE-2026-16350)

* firefox: thunderbird: Information disclosure in the Storage: IndexedDB component (CVE-2026-16391)

* firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-16375)

* firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-16356)

* firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-16363)

* firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153 (CVE-2026-16412)

* firefox: thunderbird: Same-origin policy bypass in the Networking: DNS component (CVE-2026-16381)

* firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-16355)

* firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13 (CVE-2026-16361)

* firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-16352)

* firefox:…

SUSE-SU-2026:23115-1 — Security update for MozillaFirefox

Security update for MozillaFirefox

UBUNTU-CVE-2026-16391

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

Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

WID-SEC-W-2026-2458 — Mozilla Firefox und Thunderbird: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Mozilla Firefox und Mozilla Thunderbird ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Berechtigungen zu erweitern, Sandbox-Escapes durchzuführen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen oder Speicherbeschädigungen zu verursachen.