Cross-site Scripting (XSS) - Generic in GitHub repository flatpressblog/flatpress prior to 1.3.
https://huntr.dev/bounties/d6d1e1e2-2f67-4d28-aa84-b30fb1d2e737
https://github.com/flatpressblog/flatpress/commit/0ee4f2e8a7b9276880b56858e408cc9c6643cc3b