Bug 2448210

Summary:	CVE-2026-4224 python3.9: Stack overflow parsing XML with deeply nested DTD content models [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Jon Moroney <jmoroney>
Component:	python3.9	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	45	CC:	cstratak, mhroncok, python-maint, python-packagers-sig, thrnciar, torsava, vstinner
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["b571fc48-3bad-406e-b9d0-df9975a34ae8"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2448181

Description Jon Moroney 2026-03-16 20:10:10 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 Miro Hrončok 2026-03-18 13:26:22 UTC

Due to a low CVSS score, we are not fixing this one in Python 3.9, which is included in Fedora only to allow testing against it.

Comment 2 Aoife Moloney 2026-08-17 14:20:05 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.