source: http://www.securityfocus.com/bid/54859/info

YT-Videos Script is prone to an SQL-injection vulnerability because it fails to sufficiently sanitize user-supplied data before using it in an SQL query.

A successful exploit may allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database. 

http://www.example.com/demo/ytvideos/play.php?id=2'