NVD CVE API

The NVD CVE API provides programmatic access to CVE (Common Vulnerabilities and Exposures) records including CVSS severity scores, affected product lists, CWE classifications, and reference links. Supports filtering by CVE ID, CVSS metrics, CWE, keyword, modification date, and publication date. Without an API key: 5 requests per 30 seconds; with key: 50 requests per 30 seconds.