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Alerts This Week
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Debian 11 DLA-4466-1 Thunderbird Important Info Disclosure Fix

debian lts
Calendar Grey February 4, 2026
Dist Debian Esm H88
Upgrade your Thunderbird on Debian 11 to address a critical information disclosure issue. Fix version 1:140.7.1esr-1~deb11u1.
A security issue was discovered in Thunderbird, which could result in information disclosure
Topics%20covered

Topics Covered

security advisory update debian important information disclosure thunderbird

Summary

For Debian 11 bullseye, this problem has been fixed in version
1:140.7.1esr-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/source-package/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


Severity
important
Lowest
Low
Medium
High
Critical

Package: thunderbird
Version: 1:140.7.1esr-1~deb11u1
CVE ID: CVE-2026-0818

Topics%20covered

Topics Covered

security advisory update debian important information disclosure thunderbird

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