Red Hat Security Advisory: python-urllib3 security update
Affects Red Hat python-urllib3Source GCVE Database
Not known to be exploited · fixed in Red Hat package updates : patch Red Hat python-urllib3 soon.
Data as of 30 Oct 2026, 20:36 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.10.2
Exploitation evidence
Disclosed: evidence found.
CVE published 20 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
Red Hat has released an official security update for python-urllib3 in Red Hat Enterprise Linux Server Extended Life Cycle Support 7. Users should apply the update python-urllib3-1.10.2-7.el7_9.1 available from Red Hat to remediate this vulnerability. Refer to Red Hat article https://access.redhat.com/articles/11258 for update instructions. No additional mitigation steps are indicated by the vendor advisory.
Description
A security vulnerability (CVE-2025-66471) was identified in the python-urllib3 library's Streaming API, which improperly handles highly compressed data. This issue affects Red Hat Enterprise Linux Server Extended Life Cycle Support 7 versions. Red Hat has issued an important security update to address this flaw.