Frappe is a full-stack web application framework. Prior to versions 14.94.2 and 15.57.0, authenticated users could upload carefully crafted malicious files via Data Import, leading to cross-site scripting (XSS). This issue has been patched in versions 14.94.2 and 15.57.0. There are no workarounds for this issue other than upgrading.
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.