Update runtime/src/main/java/io/quarkus/oidc/proxy/runtime/OidcProxy.java

Co-authored-by: Copilot <[email protected]>

Author: sberyozkin

runtime/src/main/java/io/quarkus/oidc/proxy/runtime/OidcProxy.java

@@ -255,6 +255,12 @@ public void localAuthorizationCodeFlowRedirect(RoutingContext context) {
                 return;
             }
             String oidcProxyState = OidcUtils.removeCookie(context, oidcTenantConfig, OIDC_PROXY_STATE_COOKIE);
+            if (oidcProxyState == null) {
+                LOG.error("Proxy state cookie is missing or could not be retrieved");
+                context.response().setStatusCode(HttpResponseStatus.UNAUTHORIZED.code());
+                context.response().end();
+                return;
+            }
             if (!oidcProxyState.equals(state)) {
                 LOG.error("State query parameter is not equal to the proxy state");
                 context.response().setStatusCode(HttpResponseStatus.UNAUTHORIZED.code());