The website has a redirect loop
[root@srvman graphs-scripts]# curl https://web.nvd.nist.gov/ -i
HTTP/1.1 302 Moved Temporarily
Set-Cookie: JSESSIONID=34YogqzZqbpd8TV6DgA0WWrr; Path=/; Secure
Date: Fri, 14 Nov 2014 12:43:52 GMT
It is nothing to do with the MWG, and something the site maintainers need to fix.