Secunia Security Advisory – Some vulnerabilities have been reported in the WikiHiero extension for MediaWiki, which can be exploited by malicious people to conduct cross-site scripting attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67419/sa30698.txt
Source: https://packetstormsecurity.com/files/67419/Secunia-Security-Advisory-30698.html