We are releasing a Firefox ESR 115.3.1 security update today.
This release addresses a security issue which is known to have been exploited
in other products already. While there have been no known attacks on Firefox at
this time, it is recommended to install this update as soon as possible.
Firefox ESR 115.3.1 is available for download from
https://www.mozilla.org/firefox/organizations/all/ or via automatic update within Firefox.
The security advisory for these releases is available at:
https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/Thank you,
Pascal Chevrel
Firefox Release Manager