JetEngine < 3.8.13.1 - Unauthenticated Stored XSS via Form File Upload (SVG)

Description

The plugin does not sanitise uploaded SVG files before storing and serving them, and does not adequately restrict who can upload them, allowing unauthenticated attackers to upload a file containing malicious JavaScript that executes in the browser of any user who opens it (Stored Cross-Site Scripting).
This requires a form with a file-upload field configured to accept uploads from any (unauthenticated) user.