Ticket #30346: 30346.2.patch

src/wp-includes/media.php

@@ -3269 +3269 @@
         global $wpdb;
 
         $dir = wp_upload_dir();
-        $path = ltrim( $url, $dir['baseurl'] . '/' );
+
+        if ( 0 === strpos( $url, $dir['baseurl'] . '/' ) ) {
+                $url = substr( $url, strlen( $dir['baseurl'] . '/' ) );
+        }
 
         $sql = $wpdb->prepare(
                 "SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s",
-                $path
+                $url
         );
         $post_id = $wpdb->get_var( $sql );
         if ( ! empty( $post_id ) ) {