CVE-2026-100786

A critical use-after-free vulnerability in the Graphics component of Firefox allows for a sandbox escape, potentially enabling an attacker to execute arbitrary code outside the browser's security boundaries. Users of affected Firefox versions should prioritize updating to the patched releases (Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17) to mitigate the risk of exploitation. Organizations relying on Firefox for secure browsing should address this vulnerability immediately to protect against potential attacks.