source: https://www.securityfocus.com/bid/15845/info
 
mcGallery PRO is prone to multiple input validation vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input.
 
Successful exploitation of these vulnerabilities could result in a compromise of the application,arbitrary local file inclusion and code execution, disclosure or modification of data, the theft of cookie-based authentication credentials. They may also permit an attacker to exploit vulnerabilities in the underlying database implementation as well as other attacks. 

http://www.example.com/show.php?start=0&id=[SQL]
http://www.example.com/show.php?start=[SQL]
http://www.example.com/show.php?rand=1&id=[SQL]
http://www.example.com/show.php?rand=[SQL]