Dev.to•Jan 27, 2026, 3:41 PM
Python script heroically fetches CVEs from NVD: battles rate limits with 2-second naps, because cybersecurity means waiting patiently for disaster data

Python script heroically fetches CVEs from NVD: battles rate limits with 2-second naps, because cybersecurity means waiting patiently for disaster data

A Python script has been developed to fetch and store Common Vulnerabilities and Exposures (CVE) data from the National Vulnerability Database (NVD) Application Programming Interface (API). The script, which utilizes the requests library, fetches data in batches of 2000, with a maximum of 100 batches, and stores it in a database. The NVD API, provided by the National Institute of Standards and Technology (NIST), offers access to a comprehensive database of cybersecurity vulnerabilities. The script extracts relevant information, including CVE ID, publication date, and severity score, and inserts or replaces existing records to ensure data deduplication. With a timeout of 30 seconds and a two-second delay between requests, the script avoids rate limiting. This development is significant in the cybersecurity industry, as it enables efficient access to vital vulnerability data, facilitating risk assessment and mitigation efforts. The script's functionality is demonstrated by fetching 2000 records, showcasing its potential for large-scale vulnerability data synchronization.

Viral Score: 75%

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