CKSource CKEditor5 35.4.0 Cross Site Scripting

`# Exploit Title: Cross Site Scripting in CKSource's CKEditor5 35.4.0  
# Google Dork: N/A  
# Date: February 09, 2023  
# Exploit Author: Manish Pathak  
# Vendor Homepage: https://cksource.com/  
# Software Link: https://ckeditor.com/ckeditor-5/download/  
# Version: 35.4.0  
# Tested on: Linux / Web  
# CVE : CVE-2022-48110  
  
  
  
CKSource CKEditor5 35.4.0 was discovered to contain a cross-site scripting  
(XSS) vulnerability via Full Featured CKEditor5 Widget as the editor fails  
to sanitize user provided data.  
  
An attacker can execute arbitrary script in the browser in the context of  
the affected site. This can allow the attacker to steal cookie-based  
authentication credentials and launch other attacks.  
  
CKEditor5 version 35.4.0 is tested & found to be vulnerable.  
  
Documentation avaiable at  
https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html#security  
  
Security Docs Says """The HTML embed feature does not currently execute  
code in <script> tags. However, it will execute code in the on* and  
src="javascript:..." attributes."""  
  
  
  
Payload:  
  
<div class="raw-html-embed">  
<script>alert(456)</script>  
</div>  
`