Description (CNA)
A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4.11-1 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-14 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-14 before * |
| Red Hat / Red Hat build of Keycloak 26.4.11 | unaffected |
| Red Hat / Red Hat Build of Keycloak | affected |
| Red Hat / Red Hat Build of Keycloak | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 8 | unaffected |
| Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack | unaffected |
| Red Hat / Red Hat Single Sign-On 7 | unaffected |
CWE
CWE-918
References
- https://access.redhat.com/errata/RHSA-2026:6477
- https://access.redhat.com/errata/RHSA-2026:6478
- https://access.redhat.com/security/cve/CVE-2026-1180
- https://bugzilla.redhat.com/show_bug.cgi?id=2430781
ADP enrichment
No English description supplied.
No references supplied.