Cross-site scripting (XSS) vulnerability in index.php in Rob Hensley AckerTodo 4.0 allows remote attackers to inject arbitrary web script or HTML via the task_id parameter in an edit_task command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28810
http://www.vupen.com/english/advisories/2006/3517
http://www.securityfocus.com/archive/1/447071/100/100/threaded
http://www.securityfocus.com/archive/1/445465/100/0/threaded