Cross-site scripting (XSS) vulnerability in private.php in MyBB 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the do parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26994
http://www.vupen.com/english/advisories/2006/2190
http://www.securityfocus.com/bid/18297
http://www.securityfocus.com/archive/1/436286/100/0/threaded