Frappe is a full-stack web application framework. Prior to versions 15.106.0 and 16.16.0, stored XSS in Note was possible due to lack of sanitization. This issue has been patched in versions 15.106.0 and 16.16.0.
Improper Neutralization of Input During Web Page Generation 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.