# 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
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