source: https://www.securityfocus.com/bid/25112/info

Online Store Application Template is prone to an SQL-injection vulnerability because it fails to sufficiently sanitize user-supplied data before using it in an SQL query.

Exploiting this issue could allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database. 

To demonstrate this issue, use a valid username, such as 'admin', in the Username field, and the following string for the password field of the vulnerable script:

anything' OR 'x'='x