Opencart 3.x Cross Site Scripting

`# Exploit Title: Opencart 3.x.x Authenticated Stored XSS  
# Date: 08/15/2019  
# Exploit Author: Nipun Somani  
# Author Web: http://thehackerstore.net  
# Vendor Homepage: https://www.opencart.com/  
# Software Link: https://github.com/opencart/opencart  
# Version: 3.x.x  
# Tested on: Debian 9, Windows 10 x64  
# CVE : CVE-2019-15081  
  
  
Description:  
The Opencart Version 3.x.x allows editing Source/HTML of the Categories /  
Product / Information pages in the admin panel which isn't sanitized to  
user input allowing for an attacker to execute arbitrary javascript code  
leading to Stored Cross-Site-Scripting(XSS).  
  
Proof-of-Concept(POC):  
  
1. Log-in to admin-panel.  
2. Navigate to Catlog and then select any of [Categories or Products or Information] options and and pick any entry or create one.  
3. Under description click on Source option and insert your XSS payload.  
i.e: "><script>alert("XSS")</script>  
4. Now visit the modified page of your public website. And your injected XSS payload will execute.  
`