src/main/java/org/keycloak/protocol/cas/endpoints/AbstractValidateEndpoint.java

@@ -186,8 +186,6 @@
            throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Ticket was not issued for this service", Response.Status.BAD_REQUEST);
        }

        clientSession.setNote(CASLoginProtocol.SESSION_TICKET, ticket);

        if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
            event.error(Errors.SESSION_EXPIRED);
            throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
@@ -226,6 +224,10 @@
            throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
        }

        // Single logout refers to the service ticket the client session was established with
        if (prefix.equals(CASLoginProtocol.SERVICE_TICKET_PREFIX)) {
            clientSession.setNote(CASLoginProtocol.SESSION_TICKET, ticket);
        }
    }

    protected void createProxyGrant(String pgtUrl) {