POS Codekop v2.0 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the nm_member parameter at print.php.
https://yuyudhn.github.io/pos-codekop-vulnerability/
https://www.youtube.com/watch?v=bbbA-q1syrA
http://packetstormsecurity.com/files/173280/Sales-Of-Cashier-Goods-1.0-Cross-Site-Scripting.html