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

DSA 5355-1: thunderbird security update

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Debian Security Advisory DSA-5355-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
February 18, 2023   https://www.debian.org/security/faq
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Package : thunderbird
CVE ID : CVE-2022-46871 CVE-2022-46877 CVE-2023-0430 CVE-2023-0616
CVE-2023-0767 CVE-2023-23598 CVE-2023-23601 CVE-2023-23602
CVE-2023-23603 CVE-2023-23605 CVE-2023-25728 CVE-2023-25729
CVE-2023-25730 CVE-2023-25732 CVE-2023-25735 CVE-2023-25737
CVE-2023-25739 CVE-2023-25742 CVE-2023-25744 CVE-2023-25746

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

For the stable distribution (bullseye), these problems have been fixed in
version 1:102.8.0-1~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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/