SQL injection vulnerability in Nuked-klaN 1.7.6 allows remote attackers to execute arbitrary SQL commands via the X-Forwarded-For (X_FORWARDED_FOR) HTTP header, as demonstrated by a request to the /nk/ URI.
https://www.exploit-db.com/exploits/3858
https://exchange.xforce.ibmcloud.com/vulnerabilities/34116
http://www.vupen.com/english/advisories/2007/1662
http://www.securityfocus.com/archive/1/467750/100/0/threaded
http://securityreason.com/securityalert/2665