source: https://www.securityfocus.com/bid/17651/info

MKPortal is prone to multiple input-validation vulnerabilities. The issues include cross-site scripting and SQL-injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input. 

Successfully exploiting these vulnerabilities could allow an attacker to compromise the application, access or modify data, steal cookie-based authentication credentials, or even exploit vulnerabilities in the underlying database implementation. Other attacks are also possible.

MKPortal version 1.1 in conjunction with vBulletin 3.5.4 is vulnerable to these issues; other versions may also be affected.

http://www.example.com/index.php?ind=',userid='1