Bug 2457885

Summary:	CVE-2026-34480 apache-commons-configuration: Apache Log4j Core: Invalid XML output causes denial of service in logging [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Jon Moroney <jmoroney>
Component:	apache-commons-configuration	Assignee:	Jerry James <loganjerry>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	epel-packagers-sig, extras-orphan, java-sig-commits, loganjerry, michel, SpikeFedora
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["43e81c52-9a5c-4fd5-8679-d40721c51d82"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-04-13 16:53:05 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:	2457328

Description Jon Moroney 2026-04-13 16:06:29 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 Jerry James 2026-04-13 16:53:05 UTC

The log4j functionality is only used for the tests, which are not shipped in any binary RPM. The inputs to log4j are strictly controlled by the tests, preventing the conditions for this CVE from arising.