Multiple SQL injection vulnerabilities in Wordcircle 2.17 allow remote attackers to (1) execute arbitrary SQL commands and bypass authentication via the password field in the login action to index.php (involving v_login.php and s_user.php) and (2) have other unknown impact via certain other fields in unspecified scripts.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24108
https://exchange.xforce.ibmcloud.com/vulnerabilities/24105
http://www.vupen.com/english/advisories/2006/0185
http://www.securityfocus.com/bid/16227
http://www.securityfocus.com/archive/1/421746/100/0/threaded
http://www.securityfocus.com/archive/1/421745/100/0/threaded
http://securityreason.com/securityalert/346