CVE-2021-27907: Cross-site Scripting

Apache Superset allowed the creation of a Markdown component on a Dashboard page for describing chart’s related information. Abusing this functionality, a malicious user could inject javascript code executing unwanted action in the context of the user’s browser. The javascript code will be automatically executed (Stored XSS) when a legitimate user surfs on the dashboard page. The vulnerability is exploitable creating a div section and embedding in it a svg element with javascript code.