Description
Keycloak provides a way to let users log in using Microsoft accounts while restricting access to a specific organization (tenant). A flaw was discovered where this restriction is ignored when using the token exchange feature. This means an attacker with a valid Microsoft token from a completely different organization could gain access to the Keycloak realm, potentially accessing sensitive data or performing unauthorized actions.
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 26.6
Default version status: affected
26.6.7-3 to < *unaffected
Red Hat Red Hat build of Keycloak 26.6
Default version status: affected
26.6-20 to < *unaffected
Red Hat Red Hat build of Keycloak 26.6
Default version status: affected
26.6-20 to < *unaffected
Red Hat Red Hat build of Keycloak 26.6.7
Default version status: unaffected
Red Hat Red Hat build of Keycloak 26.6.7
Default version status: unaffected
Red Hat Red Hat build of Keycloak 26.6.7
Default version status: unaffected
Red Hat Red Hat Data Grid 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