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RLSA-2026:3516

RLSA-2026:3516 · Important: thunderbird security update

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fix(es): * 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 Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 (CVE-2026-2793) * firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771) * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774) * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software (CVE-2026-2776) * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781) * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766) * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769) * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787) * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768) * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-2783) * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788) * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784) * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759) * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762) * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761) * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777) * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790) * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775) * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763) * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 (CVE-2026-2792) * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773) * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786) * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789) * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757) * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-2760) * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772) * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779) * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767) * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764) * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782) * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765) * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780) * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component (CVE-2026-2778) * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758) * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791) * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770) 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.

CVSS 7.5 · High · Fix available

Published
Updated

Stack: system

Affected products and versions

  • thunderbird Rocky Linux:9

    Affected ranges
    • ECOSYSTEM: < 0:140.8.0-1.el9_7

    Update to 0:140.8.0-1.el9_7

Original sources

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