ASUSTOR Data Master 3.1.5 and below makes an HTTP request for a configuration file that is vulnerable to XSS. A man in the middle can take advantage of this by inserting Javascript into the configuration files Version field.
[
{
"product": "ASUSTOR Data Master",
"vendor": "Tenable",
"versions": [
{
"status": "affected",
"version": "3.1.5 and below"
}
]
}
]