Bug 2431299

Summary:	CVE-2025-66471 mingw-python-urllib3: urllib3 Streaming API improperly handles highly compressed data [fedora-42]
Product:	[Fedora] Fedora	Reporter:	Dhananjay Arunesh <darunesh>
Component:	mingw-python-urllib3	Assignee:	Sandro Mani <manisandro>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	42	CC:	manisandro
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["843f2b4d-a65a-4954-84c0-6ac69590b88e"]}
Fixed In Version:	mingw-python-urllib3-2.6.3-1.fc42 mingw-python-urllib3-2.6.3-1.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-01-31 17:09:15 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 18:46:29 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 Fedora Update System 2026-01-21 18:31:42 UTC

FEDORA-2026-2b6dfd7c83 (mingw-python-urllib3-2.6.3-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-2b6dfd7c83

Comment 2 Fedora Update System 2026-01-21 18:31:43 UTC

FEDORA-2026-8b7270b473 (mingw-python-urllib3-2.6.3-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-8b7270b473

Comment 3 Fedora Update System 2026-01-22 01:43:24 UTC

FEDORA-2026-8b7270b473 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-8b7270b473`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-8b7270b473

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-01-22 01:54:58 UTC

FEDORA-2026-2b6dfd7c83 has been pushed to the Fedora 42 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-2b6dfd7c83`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-2b6dfd7c83

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-01-31 17:09:15 UTC

FEDORA-2026-2b6dfd7c83 (mingw-python-urllib3-2.6.3-1.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-01-31 17:27:45 UTC

FEDORA-2026-8b7270b473 (mingw-python-urllib3-2.6.3-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.