PHP remote file inclusion vulnerability in cart_content.php in Squirrelcart 2.2.2 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the cart_isp_root parameter.
https://www.exploit-db.com/exploits/1790
https://exchange.xforce.ibmcloud.com/vulnerabilities/26443
http://www.vupen.com/english/advisories/2006/1818