Bug 2431303

Summary:	CVE-2025-66471 python-urllib3: urllib3 Streaming API improperly handles highly compressed data [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Dhananjay Arunesh <darunesh>
Component:	python-urllib3	Assignee:	Python Maintainers <python-maint>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	43	CC:	aurelien, code, infra-sig, jeremy, mhroncok, python-maint, python-packagers-sig
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["843f2b4d-a65a-4954-84c0-6ac69590b88e"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-01-20 21:26:06 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2419467

Description Dhananjay Arunesh 2026-01-20 18:46:46 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Ben Beasley 2026-01-20 21:26:06 UTC

Per https://www.cve.org/CVERecord?id=CVE-2025-66471, this is fixed in 2.6.0 and later. Fedora 43 has 2.6.3, so this is already fixed.