SQL injection vulnerability in links.php in Scriptsagent.com Links Directory 1.1 allows remote authenticated users to execute arbitrary SQL commands via the cat_id parameter in a list action.
https://www.exploit-db.com/exploits/5377
https://exchange.xforce.ibmcloud.com/vulnerabilities/41661
http://www.vupen.com/english/advisories/2008/1126/references