SQL injection vulnerability in the loadByKey function in the TznDbConnection class in tzn_mysql.php in Tirzen (aka TZN) Framework 1.5, as used in TaskFreak! before 0.6.3, allows remote attackers to execute arbitrary SQL commands via the username field in a login action.
https://exchange.xforce.ibmcloud.com/vulnerabilities/58241
http://www.taskfreak.com/versions.html