Changeset 45975

Timestamp:

09/04/2019 05:07:33 PM (4 years ago)

Author:

SergeyBiryukov

Message:

Improve URL validation in wp_validate_redirect().

Merges [45971] to the 4.9 branch.
Props vortfu, whyisjake, peterwilsoncc.

Location:

branches/4.9

Files:

• . (modified) (1 prop)
• src/wp-includes/pluggable.php (modified) (1 diff)

branches/4.9/src/wp-includes/pluggable.php

@@ -1342 +1342 @@
     if ( isset($lp['scheme']) && !('http' == $lp['scheme'] || 'https' == $lp['scheme']) )
         return $default;
+
+    if ( ! isset( $lp['host'] ) && ! empty( $lp['path'] ) && '/' !== $lp['path'][0] ) {
+        $path = '';
+        if ( ! empty( $_SERVER['REQUEST_URI'] ) ) {
+            $path = dirname( parse_url( 'http://placeholder' . $_SERVER['REQUEST_URI'], PHP_URL_PATH ) . '?' );
+        }
+        $location = '/' . ltrim( $path . '/', '/' ) . $location;
+    }
 
     // Reject if certain components are set but host is not. This catches urls like https:host.com for which parse_url does not set the host field.