SQL injection vulnerability in index.php for Lighthouse Squirrelcart allows remote attackers to execute arbitrary SQL commands via the (1) crn parameter in a show action or (2) rn parameter in a show_detail action.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19904
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0963
http://www.securityfocus.com/bid/12944