SQL injection vulnerability in knowledgebase-control.php in Orca Knowledgebase 2.1b and earlier allows remote attackers to execute arbitrary SQL commands via the qid parameter.
http://www.vupen.com/english/advisories/2005/2642
http://www.greywyvern.com/orca#know
http://secunia.com/advisories/17805
http://pridels0.blogspot.com/2005/11/orca-knowledgebase-sql-vuln.html