A thunderbird security update has been released for Debian GNU/Linux 10 and 11 to address multiple security issues.

DSA 5118-1: thunderbird security update

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Debian Security Advisory DSA-5118-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
April 10, 2022   https://www.debian.org/security/faq
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Package : thunderbird
CVE ID : CVE-2022-1097 CVE-2022-1196 CVE-2022-1197 CVE-2022-24713
CVE-2022-28281 CVE-2022-28282 CVE-2022-28285 CVE-2022-28286
CVE-2022-28289

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

For the oldstable distribution (buster), these problems have been fixed
in version 1:91.8.0-1~deb10u1.

For the stable distribution (bullseye), these problems have been fixed in
version 1:91.8.0-1~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/