source: https://www.securityfocus.com/bid/27598/info
HispaH Youtube Clone is prone to a cross-site scripting vulnerability because the application fails to properly sanitize user-supplied input.
An attacker may leverage this issue to execute arbitrary script code in the context of an unsuspecting user. This may help the attacker steal cookie-based authentication credentials and launch other attacks.
http://www.example.com/youtube/siteadmin/editor_files/includes/load_message.php?lang[please_wait]=[XSS]