Ticket #44532: 44532.patch

src/wp-includes/functions.php

@@ -5228 +5228 @@
  */
 function wp_is_stream( $path ) {
         $wrappers = stream_get_wrappers();
+        foreach ( $wrappers as &$wrapper ) {
+                $wrapper = preg_quote( $wrapper, '!' );
+        }
         $wrappers_re = '(' . join('|', $wrappers) . ')';
 
         return preg_match( "!^$wrappers_re://!", $path ) === 1;