BNF and WorldCat links are allowed but at least VIAF, DNB and LoC are not for https://musicbrainz.org/series/8fc1e576-1b13-45fd-9892-d106b02f59b6
Either Please select a link type for the URL you’ve entered. for VIAF or This URL is not allowed for the selected link type. for DNB and LoC.
There are probably more authority control links I haven't tested.