Bug 2431367 (CVE-2026-0865)

Summary: CVE-2026-0865 cpython: wsgiref.headers.Headers allows header newline injection 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 header names and values containing newlines can allow injecting HTTP headers.
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: 2431754, 2431758, 2431761, 2431766, 2431781, 2431788, 2431791, 2431793, 2431797, 2431800, 2431802, 2431805, 2431810, 2431813, 2431818, 2431821, 2431826, 2431830, 2431835, 2431838, 2431842, 2431845, 2431848    
Bug Blocks:    

Description OSIDB Bzimport 2026-01-20 22:01:52 UTC
User-controlled header names and values containing newlines can allow injecting HTTP headers.