Multiple SQL injection vulnerabilities in Geeklog 1.4.0 before 1.4.0sr1 and 1.3.11 before 1.3.11sr4 allow remote attackers to inject arbitrary SQL commands via the (1) userid variable to users.php or (2) sessid variable to lib-sessions.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24775
http://www.vupen.com/english/advisories/2006/0661
http://www.securityfocus.com/bid/16755
http://www.securityfocus.com/archive/1/425506/100/0/threaded
http://www.gulftech.org/?node=research&article_id=00102-02192006