Ticket #33058: 33058.diff

src/wp-admin/includes/class-wp-filesystem-ftpext.php

@@ -412 +412 @@
          * Checks if a file or directory exists.
          *
          * @since 2.5.0
+         * @since 6.0.0 returns false for empty filepath
          *
          * @param string $file Path to file or directory.
          * @return bool Whether $file exists or not.
          */
         public function exists( $file ) {
+                
+                /**
+                 * Check for empty filepath. If ftp_nlist gets an empty path,
+                 * it checks the current working dir and may return true here.
+                 * 
+                 * @ticket 33058
+                 */
+                if ( empty( $file ) ) {
+                        return false;
+                }
+
                 $list = ftp_nlist( $this->link, $file );
 
                 if ( empty( $list ) && $this->is_dir( $file ) ) {