Multiple SQL injection vulnerabilities in 2200net Calendar system 1.2, with gpc_magic_quotes disabled, allow remote attackers to execute arbitrary SQL commands and bypass authentication via (1) the fm_data[id] parameter to calendar.php and (2) the $ad['acc'] variable in adminlogin.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24484
https://exchange.xforce.ibmcloud.com/vulnerabilities/24483
http://www.vupen.com/english/advisories/2006/0486
http://www.securityfocus.com/bid/16569
http://www.securityfocus.com/archive/1/425094/100/0/threaded
http://www.evuln.com/vulns/62/summary.html