Secunia Security Advisory – Two vulnerabilities have been reported in MyBB, where one has unknown impacts and the other one can be exploited by malicious users to conduct script insertion attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/77217/sa34979.txt
Source: https://packetstormsecurity.com/files/77217/Secunia-Security-Advisory-34979.html