Ticket #17129: 17129.diff

wp-includes/functions.php

@@ -288 +288 @@
         if ( !is_string( $data ) )
                 return false;
         $data = trim( $data );
-        if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings
+        $length = strlen( $data );
+        if ( $length < 4 )
+                return false;
+        elseif ( ':' !== $data[1] )
+                return false;
+        elseif ( ';' !== $data[$length-1] )
+                return false;
+        elseif ( $data[0] !== 's' )
+                return false;
+        elseif ( '"' !== $data[$length-2] )
+                return false;
+        else
                 return true;
-        return false;
 }
 
 /**