MyBB Export User 2.0 Cross Site Scripting

`# Exploit Title: MyBB Export User Plugin 2.0 – Cross-Site Scripting  
# Date: January 29, 2021  
# Author: 0xB9  
# Twitter: @0xB9sec  
# Software Link: https://community.mybb.com/mods.php?action=view&pid=1408  
# Version: 2.0  
# Tested On: Windows 10  
# CVE: CVE-2023-27890  
  
Description:  
This plugin allows users to request their data to export. XSS occurs when admin is generating data for user.  
  
Proof of Concept:  
  
– As a regular user go to User CP -> Edit Profile  
– Add a payload in Custom User Title, Location, or Bio <script>alert(1)</script>  
– Request your data via User CP -> DSGVO data request  
– Login as admin you will be notified a user wants their data  
– When generating the users data their payload will execute  
`