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: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin, dfreiber, drow, gotiwari, jburrell, jgrulich, jhorak, ljawale, luizcosta, mvyas, nweather, rbobbitt, teagle, tpopela, vkumar
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.
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Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2431759, 2431763, 2431768, 2431786, 2431790, 2431795, 2431798, 2431808, 2431812, 2431816, 2431823, 2431827, 2431831, 2431834, 2431839, 2431841, 2431843, 2431847, 2431849, 2431851, 2431852, 2431853, 2431854    
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.