Mitigation Bypass Vulnerability in Firefox Notifications Component
CVE-2026-92039

Currently unrated

Key Information:

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

What is CVE-2026-92039?

A mitigation bypass vulnerability exists in the Notifications component of Firefox, which could potentially allow unauthorized actions. This flaw affects specific versions of Firefox, including Firefox 156 and Firefox ESR 153.3. The issue has been addressed in subsequent updates, emphasizing the importance of keeping browser versions up to date to maintain security and privacy.