Nes is a websocket extension library for hapi.
Hapi is a webserver framework.
Versions below and including 6.4.0 have a denial of service vulnerability via
an invalid Cookie header. This is only present when websocket authentication
is set to
cookie. Submitting an invalid cookie on the websocket upgrade
request will cause the node process to error out.
Upgrade to version 6.4.1 or later.