Use-After-Free Vulnerability in Firefox by Mozilla

CVE-2026-100815

What is CVE-2026-100815?

A use-after-free vulnerability has been identified in the CSS Parsing and Computation component of Mozilla Firefox. This flaw can potentially allow attackers to execute arbitrary code under certain conditions, creating risks for users who have not updated to the patched versions. The vulnerability was addressed with updates in Firefox ESR 153.4 and Firefox 157, highlighting the importance of regular software maintenance and prompt installation of security updates to safeguard against exploitation.

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