Bug 2567246

Summary: CVE-2026-115557 python3.12: Distrust compromised eMudhra intermediate certificates in Python ssl module [fedora-all]
Product: [Fedora] Fedora Reporter: Tomas Hoger <thoger>
Component: python3.12Assignee: Python Maintainers <python-maint>
Status: ON_QA --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: cstratak, mhroncok, python-maint, python-packagers-sig, thrnciar, vstinner
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["ce290549-9217-4667-b404-f41e99ec3db9"]}
Fixed In Version: python3.12-3.12.16-2.fc44 python3.12-3.12.16-2.fc46 Doc Type: ---
Doc Text:
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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:    
Bug Blocks: 2560301    

Description Tomas Hoger 2026-11-05 11:24:32 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.

Python has added a denylist for known compromised certificates to the "ssl" module to ensure user safety even without certificate revocation configured. Known compromised certificates will automatically be rejected regardless of the SSLContext policy configuration.
Comment 1 Fedora Update System 2026-11-05 14:37:51 UTC 
FEDORA-2026-4e3279af04 (python3.12-3.12.16-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-4e3279af04
Comment 2 Fedora Update System 2026-11-05 14:37:57 UTC 
FEDORA-2026-5f99243da4 (python3.12-3.12.16-2.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5f99243da4