CVE-2026-74944

CVE-2026-74944 is a use-after-free in Firefox/Thunderbird's DOM: Core & HTML component, rated Critical (CVSS 9.8, network-exploitable, no auth or user interaction required). It enables arbitrary code execution, privilege escalation, and information disclosure. Affected versions: Firefox <154, ...

Astra Linux – Vulnerability in Firefox and Thunderbird

Mitigation bypass in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Important: firefox

Issue Overview: Double-Free / Use-After-Free UAF in the IntoIter::drop and ThinVec::clear functions in the thinvec crate. A panic in ptr::dropinplace skips setting the length to zero. CVE-2026-6654 Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150,...

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

AlmaLinux 10 : thunderbird (ALSA-2026:3517)

The remote AlmaLinux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:3517 advisory. libvpx: Heap buffer overflow in libvpx CVE-2026-2447 firefox: Invalid pointer in the JavaScript Engine component CVE-2026-2785 firefox: Memory safety bug...

MiracleLinux 9 : thunderbird-140.8.0-1.el9_7.ML.1 (AXSA:2026-264:05)

The remote MiracleLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-264:05 advisory. libvpx: Heap buffer overflow in libvpx CVE-2026-2447 firefox: Invalid pointer in the JavaScript Engine component CVE-2026-2785 firefox: Memory safety...

AlmaLinux 8 : firefox (ALSA-2026:3338)

The remote AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:3338 advisory. libvpx: Heap buffer overflow in libvpx CVE-2026-2447 firefox: Invalid pointer in the JavaScript Engine component CVE-2026-2785 firefox: Memory safety bugs...

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

firefox: thunderbird: Mitigation bypass in the DOM: HTML Parser component

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

RLSA-2026:3338 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: libvpx: Heap buffer overflow in libvpx CVE-2026-2447 firefox: Invalid pointer in the JavaScript Engine component CVE-2026-2785 firefox: Memory safety bugs fixed in Firef...

ALSA-2026:3338 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: libvpx: Heap buffer overflow in libvpx CVE-2026-2447 firefox: Invalid pointer in the JavaScript Engine component CVE-2026-2785 firefox: Memory safety bugs fixed in Firef...

CVE-2026-2775

Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2775

Mitigation bypass in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2775

Mitigation bypass in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...