Home / mailings [SECURITY] [DSA 6202-1] firefox-esr security update
Posted on 08 April 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6202-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
April 08, 2026 https://www.debian.org/security/faq
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Package : firefox-esr
CVE ID : CVE-2026-5731 CVE-2026-5732 CVE-2026-5734
Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code.
For the oldstable distribution (bookworm), these problems have been fixed
in version 140.9.1esr-1~deb12u1.
For the stable distribution (trixie), these problems have been fixed in
version 140.9.1esr-1~deb13u1.
We recommend that you upgrade your firefox-esr packages.
For the detailed security status of firefox-esr please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/firefox-esr
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
