RLSA-2026:27717 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox: thunderbird: Sandbox escape in the DOM: Workers component CVE-2026-12294 firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process...

CVE-2026-12316

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the DOM: Security component...

CVE-2026-12303

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure due to incorrect boundary conditions in the Graphics: WebGPU component...

CVE-2026-12300

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bug fixed in Thunderbird 152...

CVE-2026-12326

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could...

CVE-2026-10702

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript Engine: JIT component...

CVE-2026-10701

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Graphics: Text component...

ROS-20260625-73-0019

The vulnerability of the DOM component in Firefox web browsers, Firefox ESR, and the Thunderbird email client is related to the use of memory after it is released. Exploiting this vulnerability can allow a malicious actor to compromise the confidentiality, integrity, and accessibility of protecte...

RockyLinux 8 : firefox (RLSA-2026:27717)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:27717 advisory. firefox: thunderbird: Sandbox escape in the DOM: Workers component CVE-2026-12294 firefox: thunderbird: Information disclosure, sandbox escape in the...

Oracle Linux 9 : firefox (ELSA-2026-27734)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-27734 advisory. 140.12.0-1.0.1 - Fix firefox-oracle-default-prefs.js for new nss Orabug: 37079773 - Add firefox-oracle-default-prefs.js and remove the corresponding R...

Astra Linux – Vulnerability in Firefox, Thunderbird

JIT compilation errors in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

Astra Linux – Vulnerability in Firefox, Thunderbird

Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

Astra Linux – Vulnerability in expat

In libexpat before version 2.7.4, the doContent function does not properly determine the buffer size bufSize, as there is no check for integer overflow during the reallocation of the tag buffer...

Astra Linux – Vulnerability in Firefox, Thunderbird

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

Astra Linux – Vulnerability in Firefox, Thunderbird

Incorrect boundary conditions in networking: JAR components. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

A use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...