board/admin/reguser.php in Chipmunk CMS 1.3 allows remote attackers to bypass authentication and gain administrator privileges via a direct request. NOTE: some of these details are obtained from third party information.
https://www.exploit-db.com/exploits/6959
https://exchange.xforce.ibmcloud.com/vulnerabilities/46259
http://securityreason.com/securityalert/4559