PHPJabbers Time Slots Booking Calendar 4.0 HTML Injection

# Exploit Title: PHPJabbers Time Slots Booking Calendar v4.0 - HTML Injection# Date: 13/11/2023# Exploit Author: BugsBD Limited# Discover by: Rahad Chowdhury# Vendor Homepage: https://www.phpjabbers.com/# Software Link: https://www.phpjabbers.com/time-slots-booking-calendar/# Version: v4.0# Tested on: Windows 10, Windows 11, Linux# CVE-2023-48827Descriptions:HTML injection, also known as HTML code injection or cross-sitescripting (XSS), is a web security vulnerability that allows anattacker to inject malicious code into a web page that is then viewedby other users. This can lead to various attacks, such as stealingsensitive information, session hijacking, defacement of websites, ordelivering malware to users.Steps to Reproduce:1. Login your panel2. "name, plugin_sms_api_key, plugin_sms_country_code, calendar_id,title, country name, customer_name" parameters are vulnerable to htmlinjection.3. Go to System Menu then click SMS Settings.4. Then use any HTML Tag in "SMS API Key", "Default Country Code"input field and Save.5. You will see HTML code working here.## Reproduce:[href](https://github.com/bugsbd/CVE/tree/main/2023/CVE-2023-48827)