FluxBB 1.5.11 - Stored Cross-Site Scripting (XSS)

Author: Chokri Hammedi
type: webapps
platform: php
port: 
date_added: 2025-03-20 
date_updated: 2025-03-20 
verified: 0 
codes:  
tags: 
aliases:  
screenshot_url:  
application_url: 

# Exploit Title: FluxBB 1.5.11 Stored xss
# Date: 3/8/2025
# Exploit Author: Chokri Hammedi
# Vendor Homepage: www.fluxbb.org
# Software Link: https://www.softaculous.com/apps/forums/FluxBB
# Version: FluxBB 1.5.11
# Tested on: Windows XP


1. login to admin panel
2. go to /admin_forums.php
3. click on "add forum"
4. in description text area put this payload:

<iframe src=javascript:alert(1)>

5. save changes
now everytime users enter the home page will see the alert.