CVE-2018-5215
login demo site http://demo.radiantcms.org/admin/
Username: admin
Password: radiant
and in content edit page .for example Edit About page and in body input xss payload <svg onload=alert(0)>
,and select Filter as Markdown,then save it edit.
and visite http://demo.radiantcms.org/about/ there is a alert box