What’s Vulnerable › Vulnerabilities
CVE-2026-85511: Wildfly-elytron-realm-token: parameter injection in eap's elytron oauth2
- Severity: medium (CVSS 4.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-18 · updated 2026-10-20
- Weakness: CWE-290
Description
A flaw was found in EAP's Elytron. An EAP application whose security domain is backed by an Elytron token-realm with oauth2-introspection would allow parameter substitution due to missing URL encoding.
Affected products
- Red Hat Data Grid 8: all versions
- Red Hat Fuse 7: all versions
- Red Hat JBoss Enterprise Application Platform 8.1.8.GA: all versions — fixed in 2.6.11.Final-redhat-00001
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10: all versions — fixed in 0:1.1.9-1.redhat_00001.1.el10eap, 0:1.2.7-1.redhat_00002.1.el10eap, 0:1.85.0-1.redhat_00001.1.el10eap, 0:2.0.18-1.redhat_00001.1.el10eap, 0:2.0.5-1.Final_redhat_00001.1.el10eap, 0:2.1.0-1.redhat_00001.1.el10eap
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8: all versions — fixed in 0:1.1.9-1.redhat_00001.1.el8eap, 0:1.2.7-1.redhat_00002.1.el8eap, 0:1.85.0-1.redhat_00001.1.el8eap, 0:2.0.18-1.redhat_00001.1.el8eap, 0:2.0.5-1.Final_redhat_00001.1.el8eap, 0:2.1.0-1.redhat_00001.1.el8eap
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9: all versions — fixed in 0:1.1.9-1.redhat_00001.1.el9eap, 0:1.2.7-1.redhat_00002.1.el9eap, 0:1.85.0-1.redhat_00001.1.el9eap, 0:2.0.18-1.redhat_00001.1.el9eap, 0:2.0.5-1.Final_redhat_00001.1.el9eap, 0:2.1.0-1.redhat_00001.1.el9eap
- Red Hat Single Sign-On 7: all versions
How to fix
Upgrade to a fixed version: Red Hat JBoss Enterprise Application Platform 8.1.8.GA 2.6.11.Final-redhat-00001; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 0:1.1.9-1.redhat_00001.1.el10eap, 0:1.2.7-1.redhat_00002.1.el10eap, 0:1.85.0-1.redhat_00001.1.el10eap, 0:2.0.18-1.redhat_00001.1.el10eap; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.1.9-1.redhat_00001.1.el8eap, 0:1.2.7-1.redhat_00002.1.el8eap, 0:1.85.0-1.redhat_00001.1.el8eap, 0:2.0.18-1.redhat_00001.1.el8eap; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:1.1.9-1.redhat_00001.1.el9eap, 0:1.2.7-1.redhat_00002.1.el9eap, 0:1.85.0-1.redhat_00001.1.el9eap, 0:2.0.18-1.redhat_00001.1.el9eap. Check the vendor advisory for mitigations.
References
- https://access.redhat.com/errata/RHSA-2026:70228
- https://access.redhat.com/errata/RHSA-2026:70229
- https://access.redhat.com/errata/RHSA-2026:70230
- https://access.redhat.com/errata/RHSA-2026:70277
- https://access.redhat.com/security/cve/CVE-2026-85511
- https://bugzilla.redhat.com/show_bug.cgi?id=2483140
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