Cross-site scripting (XSS) vulnerability in inc/functions_post.php in MyBB (aka MyBulletinBoard) 1.0 RC2 through 1.1.4 allows remote attackers to inject arbitrary web script or HTML via a javascript URI with an SGML numeric character reference in the url BBCode tag, as demonstrated using "javascript".
https://exchange.xforce.ibmcloud.com/vulnerabilities/27444
http://www.securityfocus.com/archive/1/438588/100/200/threaded
http://www.mybboard.com/archive.php?nid=15
http://securityreason.com/securityalert/1257