JVN (Japan Vulnerability Notes)
JVN is Japan’s coordinated vulnerability disclosure portal, operated jointly by JPCERT/CC and IPA. It publishes vulnerability notes for products developed or widely used in Japan, many of which never appear in Western vendor feeds — making it a genuinely complementary signal to NVD and GHSA.
CSIRTS.com ingests JVN (Japan Vulnerability Notes) 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 coordinated disclosure vulnerability notes. Also available via RSS, JSON API and the MCP server.