Bug 2431366 (CVE-2025-15282)

Summary:	CVE-2025-15282 cpython: Header injection via newlines in data URL mediatype in Python
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bbrownin, cahl, dfreiber, drow, gotiwari, jburrell, jgrulich, jhorak, ljawale, luizcosta, msilmser, mvyas, nweather, rbobbitt, rhel-process-autobot, teagle, tpopela, vkumar, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	Missing newline filtering has been discovered in Python. User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.	Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2431759, 2431834, 2431853, 2431854, 2431763, 2431768, 2431786, 2431790, 2431795, 2431798, 2431808, 2431812, 2431816, 2431823, 2431827, 2431831, 2431839, 2431841, 2431843, 2431847, 2431849, 2431851, 2431852
Bug Blocks:

Description OSIDB Bzimport 2026-01-20 22:01:46 UTC

User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.

Comment 6 errata-xmlrpc 2026-04-27 14:54:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10950 https://access.redhat.com/errata/RHSA-2026:10950

Comment 7 errata-xmlrpc 2026-05-19 13:07:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19064 https://access.redhat.com/errata/RHSA-2026:19064

Comment 8 errata-xmlrpc 2026-05-19 17:59:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19177 https://access.redhat.com/errata/RHSA-2026:19177