Linux · Security advisory · January 26, 2026
RHSA-2026:1089: python3.11-urllib3 security update
RHSA-2026:1089, released January 26, 2026, fixes 3 CVEs in python3.11-urllib3 (version 0:1.26.12-5.el9_7.1). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
3
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0292
87th percentile
Priority of the 3 CVEs
Patch now 0
Urgent 0
High 3
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| python3.11-urllib3 | RHEL 9 | 0:1.26.12-5.el9_7.1 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2026-21441 | urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API) | 7.5 | 0.0292 | None reported | |
| High | CVE-2025-66418 | urllib3 allows an unbounded number of links in the decompression chain | 7.5 | 0.0073 | None reported | |
| High | CVE-2025-66471 | urllib3 Streaming API improperly handles highly compressed data | 7.5 | 0.0073 | None reported |
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