Linux · Debian · Security advisory · January 17, 2026

DSA-6102-1: python-urllib3 security update

DSA-6102-1, released January 17, 2026, fixes 1 CVE in python-urllib3. None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0073
54th percentile

Fixed package versions

ProductReleaseFixed in
python-urllib3Debian 12.15 (bookworm)1.26.12-1+deb12u2
python-urllib3Debian 13.5 (trixie)2.3.0-3+deb13u1

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2025-66418 urllib3 allows an unbounded number of links in the decompression chain7.5 0.0073 None reported
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