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CVE-2026-4725

Sandbox escape due to use-after-free in the Graphics: Canvas2D component

CVSS 9.3 CRITICALEPSS 0.3%CWE-416
Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Productos afectados
Mozilla · FirefoxMozilla · Thunderbird

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Referencias
https://bugzilla.mozilla.org/show_bug.cgi?id=2017108https://www.mozilla.org/security/advisories/mfsa2026-20/https://www.mozilla.org/security/advisories/mfsa2026-23/