MyBB Plugin Last User's Threads in Profile Plugin 1.2 - Persistent Cross-Site Scripting

EDB-ID: 44339
Author: 0xB9
Published: 2018-03-23
CVE: N/A
Type: Webapps
Platform: PHP
Aliases: N/A
Advisory/Source: N/A
Tags: Cross-Site Scripting (XSS)
Vulnerable App: Download Vulnerable Application

 # Date: 3/19/2018 
# Author: 0xB9
# Contact: luxorforums.com/User-0xB9 or 0xB9[at]protonmail.com
# Software Link: https://community.mybb.com/mods.php?action=view&pid=910
# Version: v1.2
# Tested on: Ubuntu 17.10


1. Description:
Display last threads in user profile.


2. Proof of Concept:

Persistent XSS
- Create a thread with the following subject <p """><SCRIPT>alert("XSS")</SCRIPT>">
- Now visit your profile to see the alert.


3. Solution:

Patch: https://github.com/vintagedaddyo/MyBB_Plugin_Last-User-s-Threads-in-Profile/commit/5e3b81450d0bf7935885db2622f1a42e5961258d

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