source: https://www.securityfocus.com/bid/9687/info

It has been reported that Online Store Kit is prone to multiple SQL injection vulnerabilities. These issues arise due to insufficient sanitation of user-supplied input via the URI.

As a result of this a malicious user may influence database queries in order to view or modify sensitive information, potentially compromising the software or the database. It has been reported that an attacker may be able to disclose the administrator password hash by exploiting this issue.

http://www.example.com/directory/shop.php?cat=[query]