stored HTML-Injection throuth the Question Form

Dear Ladies and Gentlemen,
First of all, thank you for your time and effort in reading my Report.
While doing the Penetration Test my Brother Josef Hassan ([email protected] ) and I were able to identify another stored HTML-Injection Vulnerability in the Question Form.
The Process of the Vulnerability:

1. Login
2. Go to https://roy.demo.phpmyfaq.de/index.php?action=ask&category_id=0
3. Any User will be able to submit questions that need to be verified by the Administrator.
4. As soon as the Administrator will review the Question and accept it the HTML Code will work after refreshment.
5. The User can submit HTML code and it will run as Code.
6. Type any kind of JavaScript Code like <h1>1</h1>
   The Attacker can inject HTML Code and to do further malicious things like Phishing, Malware Download, redirecting to malicious Sites etc.
   Through this, any Attacker can inject HTML Code and use further Vulnerabilities to use other Exploitation Steps.
   Finally, I want to thank you for your time and effort, and hope to hear from you soon.

Best regards
Ahmed Hassan & Josef Hassan