Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4.11-1 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4-14 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4-14 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4.11
Default version status: unaffected
Red Hat Red Hat Build of Keycloak
Default version status: affected
Red Hat Red Hat Build of Keycloak
Default version status: affected
Red Hat Red Hat JBoss Enterprise Application Platform 8
Default version status: unaffected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
Default version status: unaffected
Red Hat Red Hat Single Sign-On 7
Default version status: unaffected