From 02b3d01d025c815fcd4e13a4ddfebc81301123f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Fromme?= <fromme@dreipunktnull.com>
Date: Wed, 8 Sep 2021 08:13:27 +0200
Subject: [PATCH] Make middleware only acting on numeric page uids

---
 .../ext/ep_theme/Classes/Middleware/ReferrerMiddleware.php    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/public/typo3conf/ext/ep_theme/Classes/Middleware/ReferrerMiddleware.php b/public/typo3conf/ext/ep_theme/Classes/Middleware/ReferrerMiddleware.php
index 35eed7a5..b5a98570 100644
--- a/public/typo3conf/ext/ep_theme/Classes/Middleware/ReferrerMiddleware.php
+++ b/public/typo3conf/ext/ep_theme/Classes/Middleware/ReferrerMiddleware.php
@@ -22,6 +22,10 @@ class ReferrerMiddleware implements MiddlewareInterface
 
         $ref = $queryParams['ref'];
 
+        if (false === is_numeric($ref)) {
+            return $handler->handle($request);
+        }
+
         /** @var SiteFinder $siteFinder */
         $siteFinder = GeneralUtility::makeInstance(SiteFinder::class);