DOM Navigation Component Vulnerability in Firefox
CVE-2026-84136

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 1 September 2026

What is CVE-2026-84136?

A vulnerability present in the Navigation component of Firefox's Document Object Model (DOM) has been identified, which could potentially lead to unauthorized access or manipulation of browser elements. This issue has been addressed in Firefox version 155 and Firefox ESR version 153.2, ensuring improved security and stability for users. Updated users are encouraged to take advantage of these available fixes to safeguard their browsing experience.