Multiple SQL injection vulnerabilities in K-Search 1.0 and earlier allow remote attackers to execute arbitrary SQL commands via the (1) term, (2) id, (3) stat, and (4) source parameters to index.php, and (5) through the image parameters with an add request.
http://www.vupen.com/english/advisories/2005/2616
http://www.exploit-db.com/exploits/13993
http://secunia.com/advisories/17719
http://pridels0.blogspot.com/2005/11/k-search-multiple-vuln.html