MyBB Thank You and Like plugins version 3.0.0 suffer from a cross site scripting vulnerability.
# Exploit Title: MyBB Thank You/Like Plugin 3.0.0 - Cross-Site Scripting # Date: 8/1/2018 # Author: 0xB9 # Twitter: @0xB9Sec # Contact: 0xB9[at]pm.me # Software Link: https://community.mybb.com/mods.php?action=view&pid=360 # Version: 3.0.0 # Tested on: Ubuntu 18.04 # CVE: CVE-2018-14888 1. Description: This plugin allows users to thank/like other users threads/posts. In user profiles it shows your most liked post/thread, the post/thread subjects aren't sanitized to user input. 2. Proof of Concept: - Use the following as the post/thread subject <script>alert('XSS')</script> - Get that post/thread liked by another user (or you) - Visit your profile to see alert. 3. Solution: Update to v3.1.0