A thunderbird security update has been released for Debian GNU/Linux 11 and 12 to address multiple security issues.

[SECURITY] [DSA 5513-1] thunderbird security update

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Debian Security Advisory DSA-5513-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
October 03, 2023 https://www.debian.org/security/faq
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Package : thunderbird
CVE ID : CVE-2023-5176 CVE-2023-5171 CVE-2023-5169

Multiple security issues were discovered in Thunderbird, which could
result in denial of service or the execution of arbitrary code.

Debian follows the Thunderbird upstream releases. Support for the
102.x series has ended, so starting with this update we're now
following the 115.x series.

For the oldstable distribution (bullseye), this problem has been fixed
in version 1:115.3.1-1~deb11u1.

For the stable distribution (bookworm), this problem has been fixed in
version 1:115.3.1-1~deb12u1.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/