Bug 2457898

Summary: CVE-2026-34478 flexmark-java: Apache Log4j Core: Log injection via CRLF sequences due to configuration attribute renames [fedora-all]
Product: [Fedora] Fedora Reporter: Jon Moroney <jmoroney>
Component: flexmark-javaAssignee: Jerry James <loganjerry>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: java-maint-sig, loganjerry
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["3b3e57ac-d7bc-486b-86c6-b7be7077654f"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-13 17:06:04 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: 2457323    

Description Jon Moroney 2026-04-13 16:31:56 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 17:06:04 UTC 
Log4j is only used for the tests and in the flexmark-docx-converter module.  We do not build the flexmark-docx-converter module in Fedora because we do not have the docx4j dependency.  Inputs to log4j are strictly controlled by the tests and so are not vulnerable.