Home / mailings [SECURITY] [DSA 6363-1] python-urllib3 security update
Posted on 23 June 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6363-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
June 23, 2026 https://www.debian.org/security/faq
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Package : python-urllib3
CVE ID : CVE-2026-44431
It was discovered that the urllib3 Python HTTP library didn't sanitise
some cross-origin redirects, which could result in information
disclosure.
For the stable distribution (trixie), this problem has been fixed in
version 2.3.0-3+deb13u2.
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
