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RLSA-2026:30846

RLSA-2026:30846 · 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): * firefox: thunderbird: Sandbox escape in the DOM: Workers component (CVE-2026-12294) * firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12313) * firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component (CVE-2026-12311) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12290) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12327) * firefox: thunderbird: JIT miscompilation in the DOM: Core & HTML component (CVE-2026-12299) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12329) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12312) * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12302) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12328) * firefox: thunderbird: Incorrect boundary conditions in the Internationalization component (CVE-2026-12330) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12314) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12309) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12310) * firefox: thunderbird: Denial-of-service in the Graphics: ImageLib component (CVE-2026-12325) * firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-12295) * firefox: thunderbird: Privilege escalation in the Graphics: WebRender component (CVE-2026-12289) * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12315) * firefox: thunderbird: Sandbox escape in the Security: Process Sandboxing component (CVE-2026-12296) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12306) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12307) * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-12297) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12305) * firefox: thunderbird: Incorrect boundary conditions in the Web Audio component (CVE-2026-12292) * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12308) * firefox: thunderbird: Incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-12324) * firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-12304) * firefox: thunderbird: Use-after-free in the Networking: HTTP component (CVE-2026-12291) * firefox: thunderbird: Memory safety bug fixed in Firefox ESR 140.12 (CVE-2026-12298) 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:10

    Affected ranges
    • ECOSYSTEM: < 0:140.12.0-1.el10_2

    Update to 0:140.12.0-1.el10_2

Original sources

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