source: http://www.securityfocus.com/bid/8619/info

It has been reported that WebForums and File-Sharing for NET are prone to a remote directory traversal attack due to insufficient sanitization of user-supplied data. This vulnerability could allow a remote attacker to traverse outside the server root directory by using '/../' character sequences.

Successful exploitation of this issue could allow a remote attacker to gain access to sensitive information. 

http://www.example.com/../user.ini