CVE-2026-124907

CVSS 8.8 (high) · published 2026-11-10

Privilege escalation, sandbox escape due to use-after-free in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

Weakness: CWE-416

Source: NVD CVE-2026-124907

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2087324
• https://www.mozilla.org/security/advisories/mfsa2026-125/
• https://www.mozilla.org/security/advisories/mfsa2026-127/
• https://www.mozilla.org/security/advisories/mfsa2026-128/
• https://www.mozilla.org/security/advisories/mfsa2026-129/

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