Piccolo Admin is an admin interface/content management system for Python, built on top of Piccolo. Piccolo's admin panel allows media files to be uploaded. As a default, SVG is an allowed file type for upload. An attacker can upload an SVG which when loaded can allow arbitrary access to the admin page. This vulnerability was patched in version 1.3.2.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.