From ad0fade3d38466b9f728cc5835ee9b1e31fe99c3 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Mon, 31 May 2021 11:33:18 +0200
Subject: [PATCH] Incorrect handling of empty values for `accept`

---
 wcfsetup/install/files/lib/util/ImageUtil.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/util/ImageUtil.class.php b/wcfsetup/install/files/lib/util/ImageUtil.class.php
index 4776e553a9..1df79ee89c 100644
--- a/wcfsetup/install/files/lib/util/ImageUtil.class.php
+++ b/wcfsetup/install/files/lib/util/ImageUtil.class.php
@@ -212,7 +212,7 @@ final class ImageUtil
             $supportsWebP = false;
             if (!empty($_SERVER["HTTP_ACCEPT"])) {
                 $acceptableMimeTypes = \array_map(static function ($acceptableMimeType) {
-                    [$mimeType] = ArrayUtil::trim(\explode(";", $acceptableMimeType));
+                    [$mimeType] = ArrayUtil::trim(\explode(";", $acceptableMimeType), false);
 
                     return $mimeType;
                 }, \explode(",", $_SERVER["HTTP_ACCEPT"]));
-- 
2.20.1