CVE-2026-2764

JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2765

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2763

CVE-2026-2763 is a use-after-free in the JavaScript Engine component of Mozilla Firefox. The vulnerability affects Firefox and related ESR branches, and has been fixed in Firefox 148 and ESR versions 115.33, 140.8; Thunderbird 148/140.8 are also listed in fixed advisories. Connected sources corro...

CVE-2026-2762 Integer overflow in the JavaScript: Standard Library component

Integer overflow in the JavaScript: Standard Library component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2761

CVE-2026-2761 is a sandbox-escape vulnerability in the Graphics: WebRender component of Mozilla Firefox/Thunderbird. The issue is fixed in Firefox 148, Firefox ESR 115.33 and 140.8, as well as Thunderbird 148 and Thunderbird 140.8 per the provided advisories. Connected documents confirm this exac...

EUVD-2026-8484

Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox 148 and Firefox ESR 140.8...

CVE-2026-2761 Sandbox escape in the Graphics: WebRender component

Sandbox escape in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2760

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2760

CVE-2026-2760 is a Firefox/Thunderbird Firefox Graphics: WebRender sandbox escape caused by incorrect boundary conditions. Multiple public advisories confirm the issue and that it is fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Affected comp...

CVE-2026-2758 Use-after-free in the JavaScript: GC component

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...

CVE-2026-2758 Use-after-free in the JavaScript: GC component

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...

CVE-2026-2758

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...

EUVD-2026-8480

Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox 148, Firefox ESR 115.33, and Firefox ESR 140.8...

CVE-2026-2758

CVE-2026-2758 is a memory-safety use-after-free in the Mozilla Firefox JavaScript GC component. Public details show it affects Firefox and Thunderbird families and was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Multiple connected advisorie...

PT-2026-21740

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 148 Thunderbird versions prior to 148 Description The software contains memory safety bugs. Some of these bugs exhibited evidence of memory corruption, and it is presumed that, with sufficient effort, they could...

PT-2026-21729

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 148 Thunderbird versions prior to 148 Description A JIT miscompilation issue exists in the JavaScript: WebAssembly component. JIT Just-In-Time compilation is a method used by browsers to improve execution speed by...

PT-2026-21736

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 148 Thunderbird versions prior to 148 Description An information disclosure issue exists, along with a mitigation bypass, within the Settings UI component. Recommendations Update Firefox to version 148 or later. Updat...

PT-2026-21731

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 148 Thunderbird versions prior to 148 Description A use-after-free condition exists in the DOM Core and HTML components. This issue could allow for unexpected behavior or potential compromise. Recommendations Update...

firefox: thunderbird: Use-after-free in the JavaScript: GC component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the JavaScript: GC component...

firefox: thunderbird: Information disclosure in the Networking component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure in the Networking component...