Updating Firefox is highly recommended

Mozilla has released Firefox versions 131.0.2, ESR 128.3.1, and ESR
115.16.1.  These updates address <a href="https://www.mozilla.org/en-US/security/advisories/mfsa2024-51/" rel="nofollow">a
severe, remotely exploitable code-execution vulnerability</a> that is
evidently already being exploited.  Updating to a fixed release seems like
a wise thing to do.

https://lwn.net/Articles/993608/