Frappe is a full-stack web application framework that uses Python and MariaDB on the server side and a tightly integrated client side library. Prior to versions 14.59.0 and 15.5.0, portal pages are susceptible to Cross-Site Scripting (XSS) which can be used to inject malicious JS code if user clicks on a malicious link. This vulnerability has been patched in versions 14.59.0 and 15.5.0. No known workarounds are available.
https://github.com/frappe/frappe/security/advisories/GHSA-7p3m-h76m-hg9v