Homepage: http://www.tuttophp.altervista.org/main.php Description: Text-based guestbook with the following features: - Data storing on text file - Paging of messages on screen - Blockage of messages with words too long into - Blockage of messages with both html tags(<>) - Validity-checking of email address Effected files: view.php XSS achived by URL Injection of pagina variable: http://www.example.com/prettyguest-ing/view.php?pagina=1