source: http://www.securityfocus.com/bid/9560/info

X-Cart has been reported to be prone to an issue that may allow remote attackers to execute arbitrary commands on the affected system. The issue is caused by a failure of the application to sanitize values specified by parameters in the URI. 

http://server/admin/general.php?mode=perlinfo&config[General][perl_binary]=/bin/ls -lR || 