Home / mailings [SECURITY] [DSA 6102-1] python-urllib3 security update
Posted on 17 January 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6102-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
January 17, 2026 https://www.debian.org/security/faq
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Package : python-urllib3
CVE ID : CVE-2025-50181 CVE-2025-66418 CVE-2026-21441
Debian Bug : 1108076 1122030 1125062
Several vulnerabilities were discovered in python-urllib3, a HTTP
library with thread-safe connection pooling for Python3, which could
result in denial of service or request forgery.
For the oldstable distribution (bookworm), these problems have been fixed
in version 1.26.12-1+deb12u2.
For the stable distribution (trixie), these problems have been fixed in
version 2.3.0-3+deb13u1.
We recommend that you upgrade your python-urllib3 packages.
For the detailed security status of python-urllib3 please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/python-urllib3
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
