CVE-2026-74949 [HIGH] – Privilege escalation due to use-after-free in the Graphics: Canvas2D component. This vulne

Privilege escalation due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.