In the default configuration of the File Manager WordPress plugin before 7.1, a Reflected XSS can occur on the endpoint /wp-admin/admin.php?page=wp_file_manager_properties when a payload is submitted on the User-Agent parameter. The payload is then reflected back on the web application response.
[
{
"product": "File Manager",
"vendor": "Unknown",
"versions": [
{
"lessThan": "7.1",
"status": "affected",
"version": "7.1",
"versionType": "custom"
}
]
}
]