[DLA 4239-1] thunderbird security update
[SECURITY] [DLA 4239-1] thunderbird security update
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Debian LTS Advisory DLA-4239-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Adrian Bunk
July 11, 2025 https://wiki.debian.org/LTS
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Package : thunderbird
Version : 1:128.12.0esr-1~deb11u1
CVE ID : CVE-2025-5986 CVE-2025-6424 CVE-2025-6425 CVE-2025-6429
CVE-2025-6430
Multiple vulnerabilities have been fixed in the email, calendar and
contacts client Thunderbird.
CVE-2025-5986
Unsolicited File Download, Disk Space Exhaustion, and
Credential Leakage via mailbox:/// Links
CVE-2025-6424
Use-after-free in FontFaceSet
CVE-2025-6425
The WebCompat WebExtension shipped exposed a persistent UUID
CVE-2025-6429
Incorrect parsing of URLs could have allowed embedding of youtube.com
CVE-2025-6430
Content-Disposition header ignored when a file is included
in an embed or object tag
For Debian 11 bullseye, these problems have been fixed in version
1:128.12.0esr-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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
