REDHAT-BUG-2483140: Low severity Red Hat JBoss EAP vulnerability

Published May 29, 2026
·
Updated

original reporting: https://docs.google.com/document/d/1Rf4NtLudECimDNy8F9clUblm6Avx8yF/edit

Auth Bypass — Elytron OAuth2 introspection bearer param-injection enables cross-audience token swap (JBoss EAP)

Authentication bypass on any EAP application whose security domain is backed by an Elytron token-realm with <oauth2-introspection>. findings/jboss-eap111.md

Affected Software

1 affected component
Red Hat JBoss EAP

Event History

May 29, 2026
Data Sourced
via Red Hat·01:38 AM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

Which JBoss EAP deployments should be prioritized for review?

Any EAP application whose security domain is backed by an Elytron token-realm configured with <oauth2-introspection> is in scope for the reported issue.

2

How can administrators identify potentially affected applications?

Review each application's EAP security domain configuration and identify domains that use an Elytron token-realm with an <oauth2-introspection> configuration.

3

What is the reported security consequence?

The issue is reported as an authentication bypass that can enable a cross-audience token swap through bearer parameter injection.

Contact

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