Incorrect handling of empty values for `accept`

diff --git a/wcfsetup/install/files/lib/util/ImageUtil.class.php b/wcfsetup/install/files/lib/util/ImageUtil.class.php
index 4776e553a9ddecdaac56fa310179030a07288787..1df79ee89c88755acd83ed532fa064f09855959d 100644 (file)
--- 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"]));