Bug 2528020

Summary: CVE-2026-59272 flexmark-java: Log4j2 AMQP Appender: Information disclosure due to disabled TLS hostname verification [fedora-all]
Product: [Fedora] Fedora Reporter: Matteo Signorini <msignori>
Component: flexmark-javaAssignee: Jerry James <loganjerry>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: java-maint-sig, kkeithley, loganjerry, rosset.filipe
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["bc1ff7e2-421d-4678-be0d-a6e6beb0e742"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-09-04 18:00:22 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: 2525069    

Description Matteo Signorini 2026-09-03 13:33:37 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.

Any application shipping logs to RabbitMQ over TLS via the Log4j2 appender, relying on the documented default, is exposed to man-in-the-middle interception of every log event.
Spring AMQP 4.1.0
Spring AMQP 4.0.0 - 4.0.4
Spring AMQP 3.2.0 - 3.2.12
Spring AMQP 2.4.18 and earlier
Comment 1 Filipe Rosset 2026-09-04 18:00:22 UTC 
flexmark-java does not use Spring AMQP, RabbitMQ, or the Log4j2 AMQP Appender

Log4j dependencies are stripped and unused during packaging