Bug 2431792

Summary: CVE-2026-0672 python3.13: Header injection in http.cookies.Morsel in Python [fedora-42]
Product: [Fedora] Fedora Reporter: Jon Moroney <jmoroney>
Component: python3.13Assignee: Lumír Balhar <lbalhar>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 42CC: ksurma, mhroncok, python-maint, python-packagers-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["d18422dd-5b98-4e4f-a87e-e0fd0de5585f"]}
Fixed In Version: python3.13-3.13.12-1.fc42 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-02-28 01:24:13 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: 2431374    

Description Jon Moroney 2026-01-21 20:26:03 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 2026-02-26 11:26:01 UTC 
FEDORA-2026-b1b37b00ef (python3.13-3.13.12-1.fc42 and python3-docs-3.13.12-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-b1b37b00ef
Comment 2 Fedora Update System 2026-02-28 01:24:13 UTC 
FEDORA-2026-b1b37b00ef (python3.13-3.13.12-1.fc42 and python3-docs-3.13.12-1.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.