source: https://www.securityfocus.com/bid/21512/info

MaviPortal is prone to a cross-site scripting vulnerability because the application fails to properly sanitize user-supplied input. 

An attacker may leverage this issue to have arbitrary script code execute in the browser of an unsuspecting user. This may help the attacker steal cookie-based authentication credentials and launch other attacks.

http://www.example.com/[scriptoath]/arama.asp?a_r_a_n_a_c_a_k= [xss Code]