CKAN is an open registry of data and content packages. Harnessing the CKAN software, this site makes it easy to find, share and reuse content and data, especially in ways that are machine automatable.
Looking for OVAL (Open Vulnerability and Assessment Language) definitions? http://www.itsecdb.com allows you to view exact details of OVAL(Open Vulnerability and Assessment Language) definitions and see exactly what you should do to verify a vulnerability. It is fully integrated with cvedetails so you will be able to see OVAL definitions related to a product or a CVE entry.