CVE Updates

The CVE Updates cron job fetches, analyzes, and summarizes the latest vulnerabilities from the National Vulnerability Database (NVD). It focuses on critical vulnerabilities that match specific criteria and sends concise, actionable summaries to your Telegram channel.

Quick Details

  • Cron Script: sendCve.js
  • Data Source: NVD Vulnerability API
  • Frequency: Typically every 6 hours
  • Command: npm run cron -- -c sendCve

Functionality

The CVE Updates cron performs the following operations:

  1. Connects to the NVD API to retrieve recently published CVE entries
  2. Filters vulnerabilities based on CVSS severity score (configurable threshold)
  3. Prioritizes vulnerabilities affecting configured technologies of interest
  4. Sends batched summaries to avoid overwhelming users with too many messages

CVE Terminology

CVE (Common Vulnerabilities and Exposures) is a list of publicly disclosed computer security flaws. Each entry contains an identification number, a description, and at least one public reference.

CVSS (Common Vulnerability Scoring System) is a way to capture the principal characteristics of a vulnerability and produce a numerical score reflecting its severity.

Usage

Running

To run the CVE Updates cron job manually:

# Run with default settings
npm run cron -- -c sendCve

Note on API Rate Limits

The NVD API has rate limits that may affect very frequent queries. It's recommended to not run this cron more than once an hour to avoid potential rate limiting.