Provide references for CVE-2021-3856.
Where can I find more information about CVE-2021-3856?
References are available at: https://issues.redhat.com/browse/KEYCLOAK-19422, https://github.com/keycloak/keycloak/pull/8588, https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743, https://bugzilla.redhat.com/show_bug.cgi?id=2010164, https://access.redhat.com/security/cve/CVE-2021-3856.