Use-After-Free Vulnerability in Firefox by Mozilla

CVE-2026-124878

What is CVE-2026-124878?

A Use-After-Free vulnerability exists in the Layout: Positioned component of Firefox. This flaw could potentially allow an attacker to execute unintended actions within the browser, leading to a range of negative consequences for users. The issue was addressed in Firefox version 160, where robust security measures were implemented to mitigate the risk and enhance overall application stability. It is crucial for users to keep their browsers updated to ensure protection against such vulnerabilities.

References