Joomla! Easydiscuss Cross Site Scripting

Joomla! Easydiscuss component versions prior to 4.0.21 suffer from a cross site scripting vulnerability.

MD5 | a5ecebe3d594d56be239429ba067ef39

# Exploit Title: Joomla Plugin Easydiscuss <4.0.21 Persistent XSS in Edit Message
# Date: 06-01-2018
# Software Link:
# Exploit Author: Mattia Furlani
# CVE: CVE-2018-5263
# Category: webapps

1. Description

Whenever a user edits a message with <\textarea> inside the body, everything after the <\textarea> will be executed in the useras browser. Works with every version up to 4.0.20

2. Proof of Concept

Login with permissions to post a message, insert <\textarea> in the body and add any html code after that, whenever a user tries to edit that message the code writed after you closed the textarea will be executed

3. Solution:

Update to version 4.0.21

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