Mozilla Firefox browser has issued an emergency update to address a zero-day vulnerability.
Firefox version 131.0.2 has this security update.
The vulnerability is in the Animation timelines with a CVSS of 9.8
Mozilla has applied this emergency fix to the Extended Support Release editions of Firefox and the Tor browser.
Firefox ESR 115.16.1, Firefox ESR 128.3.1 and Tor 13.5.7