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.
https://www.tenable.com/security/research/tra-2018-22
Source: Mitre, NVD
Published: 2018-08-27
Updated: 2018-10-30
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N