KEYCLOAK-7707

 src/main/java/org/keycloak/protocol/cas/utils/RedirectUtils.java

@@ -55,7 +55,7 @@

    public static Set<String> resolveValidRedirects(UriInfo uriInfo, String rootUrl, Set<String> validRedirects) {
        // If the valid redirect URI is relative (no scheme, host, port) then use the request's scheme, host, and port
        Set<String> resolveValidRedirects = new HashSet<String>();
        Set<String> resolveValidRedirects = new HashSet<>();
        for (String validRedirect : validRedirects) {
            resolveValidRedirects.add(validRedirect); // add even relative urls.
            if (validRedirect.startsWith("/")) {
@@ -70,7 +70,9 @@
    private static Set<String> getValidateRedirectUris(UriInfo uriInfo, RealmModel realm) {
        Set<String> redirects = new HashSet<>();
        for (ClientModel client : realm.getClients()) {
            redirects.addAll(resolveValidRedirects(uriInfo, client.getRootUrl(), client.getRedirectUris()));
            if (client.isEnabled()) {
                redirects.addAll(resolveValidRedirects(uriInfo, client.getRootUrl(), client.getRedirectUris()));
            }
        }
        return redirects;
    }