SQL injection vulnerability in show_cat.php in IndexScript 2.8 and earlier allows remote attackers to execute arbitrary SQL commands via the cat_id parameter.
https://www.exploit-db.com/exploits/4225
https://exchange.xforce.ibmcloud.com/vulnerabilities/35592
http://www.vupen.com/english/advisories/2007/2696
http://www.indexscript.com/forum/showthread.php?t=2266