source: https://www.securityfocus.com/bid/13850/info

LiteWeb Server is prone to a vulnerability that may let remote attackers bypass authentication.

The specific issue is inadequate sanitization of user-supplied requests. In particular, there is an error in the handling of slash characters '/\' that will allow remote users to access protected files. 

http://www.example.com/\admin\/login.html
http://www.example.com//admin//login.html