source: http://www.securityfocus.com/bid/25532/info

E-Smart Cart is prone to an SQL-injection vulnerability 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. 

The following proof of concept is available:

user: 'or''='
pass: 'or''='