NVD Recent CVEs
The National Vulnerability Database (NVD), run by NIST, is the reference database for CVE records with CVSS scoring. It is a high-volume firehose rather than a curated advisory stream, so CSIRTS.com keeps it out of the default browse view but fully searchable — and uses it to build permanent CVE index records with severity and KEV status.
CSIRTS.com ingests NVD Recent CVEs every 3 hours, normalizes each advisory into a common schema and cross-references every CVE against the CISA KEV catalog and public exploit datasets. Publishes newly published and updated CVE records. Also available via RSS, JSON API and the MCP server.