Changeset 45997 for trunk/src/wp-includes/kses.php

Timestamp:

09/04/2019 05:51:33 PM (4 years ago)

Author:

desrosj

Message:

Fix for URL sanitization that can lead to cross-site scripting (XSS) attacks.

Props irsdl, sstoqnov, whyisjake.

File:

• trunk/src/wp-includes/kses.php (modified) (1 diff)

trunk/src/wp-includes/kses.php

@@ -1665 +1665 @@
  */
 function wp_kses_bad_protocol_once( $string, $allowed_protocols, $count = 1 ) {
+    $string  = preg_replace( '/(&#0*58(?![;0-9])|&#x0*3a(?![;a-f0-9]))/i', '$1;', $string );
     $string2 = preg_split( '/:|&#0*58;|&#x0*3a;/i', $string, 2 );
     if ( isset( $string2[1] ) && ! preg_match( '%/\?%', $string2[0] ) ) {