Mitigation Bypass in Firefox's Popup Blocker Component
CVE-2026-92074

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 15 September 2026

What is CVE-2026-92074?

A vulnerability exists within the Popup Blocker component of Firefox that allows for a mitigation bypass, potentially enabling unauthorized functionalities. This issue has been addressed in Firefox version 156 and Firefox ESR version 153.3. Users are encouraged to update their browsers to ensure their online security remains intact.