Sandbox Escape Vulnerability in Firefox Affected by Use-After-Free Issue

CVE-2026-100800

What is CVE-2026-100800?

A use-after-free vulnerability has been identified in the Disability Access APIs component of Firefox, allowing attackers to escape the sandbox environment. This flaw can potentially lead to unauthorized access or control over system resources. Mozilla has addressed and patched this issue in Firefox ESR 153.4 and Firefox 157, ensuring enhanced security for users.

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