A flaw was found in Keycloak 4.2.1.Final, 4.3.0.Final. When TOPT enabled, an improper implementation of the Brute Force detection algorithm will not enforce its protection measures.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14657
https://access.redhat.com/errata/RHSA-2018:3595