Mitigation Bypass in the Security Component of Firefox and Firefox ESR

CVE-2026-8962

What is CVE-2026-8962?

A vulnerability exists that allows for a mitigation bypass in the security component of Firefox. This flaw could lead to unintended access control issues, enabling malicious actors to potentially exploit protected areas. The issue has been addressed in Firefox version 151 and Firefox ESR version 140.11, highlighting the importance of keeping software updated to maintain security integrity.

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