Privilege Escalation Vulnerability in Firefox Products by Mozilla

CVE-2026-74955

What is CVE-2026-74955?

A vulnerability exists within the Request Handling component of Firefox that allows attackers to escalate their privileges. This could lead to unauthorized access or actions performed under a higher privilege level than intended. Users are encouraged to update to Firefox 154 or Firefox ESR 153.1, where this vulnerability has been addressed to ensure their security.

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