Related Vulnerabilities: CVE-2020-14302  

A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same "state" parameter. This flaw allows a malicious user to perform replay attacks.

Severity Medium

Remote Yes

Type Insufficient validation

Description

A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same "state" parameter. This flaw allows a malicious user to perform replay attacks.

AVG-1332 keycloak 11.0.3-1 Medium Vulnerable

https://bugzilla.redhat.com/show_bug.cgi?id=1849584