Debian LTS: DLA-3960-1: thunderbird Security Advisory Updates
Summary
For Debian 11 bullseye, this problem has been fixed in version
1:128.4.3esr-1~deb11u1.
We recommend that you upgrade your thunderbird packages.
For the detailed security status of thunderbird please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/thunderbird
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS