Security update for MozillaThunderbird
This update for MozillaThunderbird fixes the following issues: Changes in MozillaThunderbird: Mozilla Thunderbird 140.3.0 ESR: * Right-clicking 'List-ID' -> 'Unsubscribe' created double encoded draft subject * Thunderbird could crash on startup * Thunderbird could crash when importing mail * Opening Website header link in RSS feed incorrectly re-encoded URL parameters MFSA 2025-78 (bsc#1249391) * CVE-2025-10527 Sandbox escape due to use-after-free in the Graphics: Canvas2D component * CVE-2025-10528 Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component * CVE-2025-10529 Same-origin policy bypass in the Layout component * CVE-2025-10532 Incorrect boundary conditions in the JavaScript: GC component * CVE-2025-10533 Integer overflow in the SVG component * CVE-2025-10536 Information disclosure in the Networking: Cache component * CVE-2025-10537 Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
This update for MozillaThunderbird fixes the following issues: Changes in MozillaThunderbird: Mozilla Thunderbird 140.3.0 ESR: * Right-clicking 'List-ID' -> 'Unsubscribe' created double encoded draft subject * Thunderbird could crash on startup * Thunderbird could crash when importing mail * Opening Website header link in RSS feed incorrectly re-encoded URL parameters MFSA 2025-78 (bsc#1249391) * CVE-2025-10527 Sandbox escape due to use-after-free in the Graphics: Canvas2D component * CVE-2025-10528 Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component * CVE-2025-10529 Same-origin policy bypass in the Layout component * CVE-2025-10532 Incorrect boundary conditions in the JavaScript: GC component * CVE-2025-10533 Integer overflow in the SVG component * CVE-2025-10536 Information disclosure in the Networking: Cache component * CVE-2025-10537 Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143
05 / REFERENCES
Further evidence
- https://bugzilla.suse.com/1249391
- https://www.suse.com/security/cve/CVE-2025-10527
- https://www.suse.com/security/cve/CVE-2025-10528
- https://www.suse.com/security/cve/CVE-2025-10529
- https://www.suse.com/security/cve/CVE-2025-10532
- https://www.suse.com/security/cve/CVE-2025-10533
- https://www.suse.com/security/cve/CVE-2025-10536
- https://www.suse.com/security/cve/CVE-2025-10537