A vulnerability classified as problematic was found in FlatPress. This vulnerability affects the function onupload of the file admin/panels/uploader/admin.uploader.php of the component XML File Handler/MD File Handler. The manipulation leads to cross site scripting. The attack can be initiated remotely. The name of the patch is 3cc223dec5260e533a84b5cf5780d3a4fbf21241. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-217000.
https://vuldb.com/?ctiid.217000
https://github.com/flatpressblog/flatpress/issues/178
https://github.com/flatpressblog/flatpress/commit/3cc223dec5260e533a84b5cf5780d3a4fbf21241