iframeHTML Injection TinyMCE 5 HTML WYSIWYG

Risk: Medium
Local: No
Remote: Yes

# Exploit Title: iframe\HTML Injection TinyMCE 5 HTML WYSIWYG # Date:18.10.2020 # Author: Vincent666 ibn Winnie # Software Link: https://www.tiny.cloud/features/ # Tested on: Windows 10 # Web Browser: Mozilla Firefox # Blog : https://pentest-vincent.blogspot.com/ # PoC: https://pentest-vincent.blogspot.com/2020/10/iframehtml-injection-tinymce-5-html.html PoC: We have iframe injection in TinyMCE 5. I use for example demo TinyMCE and Plone Cms with TinyMCE. Our iframe injection on the demo: Insert - Media - Embed - our iframe code. In the demo Plone Cms: Insert - Image - Caption - our iframe code. If a simple user can inject his code into these fields, then he can use it. What can you do with Iframe Injection? Different things. More often this is phishing attack. With Html Injection you can change background and change something what you want. Picture: https://imgur.com/a/IM6PBQh Iframe injection video: https://www.youtube.com/watch?v=KHbhD_zmWcI&feature=youtu.be Html injection video : https://www.youtube.com/watch?v=IoR89uQcbGc&feature=youtu.be

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