In case someone missed this (i did :(, story from a week ago), forks also should be updated by now 
Mozilla has revealed that a critical security flaw impacting Firefox and Firefox Extended Support Release (ESR) has come under active exploitation in the wild.
The vulnerability, tracked as CVE-2024-9680 (CVSS score: 9.8), has been described as a use-after-free bug in the Animation timeline component.
The issue has been addressed in the following versions of the web browser -
Firefox 131.0.2
Firefox ESR 128.3.1, and
Firefox ESR 115.16.1.
This says 131.0.2 was out on october 9th, which is the day before the article you posted, hopefully we’re all good
https://www.mozilla.org/en-US/firefox/131.0.2/releasenotes/
mine had already updated to 131.0.3
Its mainly reminder for forks, like zen, librewolf etc. Or those who break autoupdate like me
Its good you posted! I was just commenting to add additional info.
Yeah I checked mine and it’s updated to the same, I got super scared for a moment.