Cross-site scripting (XSS) vulnerability in MyCO Guestbook 1.0 allows remote attackers to inject arbitrary web script or HTML via the Name field, when registering a user.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24439
http://www.securityfocus.com/bid/16444
http://www.securityfocus.com/archive/1/423696/100/0/threaded
http://www.securityfocus.com/archive/1/423565/100/0/threaded