source: https://www.securityfocus.com/bid/54452/info

Elite Bulletin Board is prone to multiple SQL-injection vulnerabilities because the application fails to properly sanitize user-supplied input before using it in an SQL query.

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

Elite Bulletin Board 2.1.19 is vulnerable; other versions may also be affected 

http://www.example.com/ebbv2/groups.php?id=%5c&mode=view
http://www.example.com/ebbv2/rssfeed.php?bid=%5c
http://www.example.com/ebbv2/viewboard.php?bid=%5c