Home / mailings [SECURITY] [DSA 6229-1] thunderbird security update
Posted on 24 April 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6229-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
April 24, 2026 https://www.debian.org/security/faq
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Package : thunderbird
CVE ID : CVE-2026-6746 CVE-2026-6747 CVE-2026-6748 CVE-2026-6749
CVE-2026-6750 CVE-2026-6751 CVE-2026-6752 CVE-2026-6753
CVE-2026-6754 CVE-2026-6757 CVE-2026-6761 CVE-2026-6762
CVE-2026-6763 CVE-2026-6764 CVE-2026-6765 CVE-2026-6766
CVE-2026-6767 CVE-2026-6769 CVE-2026-6770 CVE-2026-6771
CVE-2026-6772 CVE-2026-6776 CVE-2026-6785 CVE-2026-6786
Multiple security issues were discovered in Thunderbird, which could
result in the execution of arbitrary code.
For the oldstable distribution (bookworm), these problems have been fixed
in version 1:140.10.0esr-1~deb12u1.
For the stable distribution (trixie), these problems have been fixed in
version 1:140.10.0esr-1~deb13u1.
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/
Mailing list: debian-security-announce@lists.debian.org
