<objective> This skill researches known vulnerabilities for a specific dependency across multiple sources: OSV.dev (npm, PyPI, Go, crates, Maven), NVD (CVSS scoring), GitHub Advisory Database (maintainer responses), and Exa web search for advisories not yet indexed.

It queries OSV.dev first for speed and accuracy, cross-checks NVD for CVSS scoring, uses Exa for recent advisories, and checks GitHub Advisory for maintainer responses, then cross-references findings and prioritizes by CVSS score and exploitability — CRITICAL (9.0-10.0) fixed immediately, HIGH (7.0-8.9) before merge, MEDIUM (4.0-6.9) planned, LOW (0.1-3.9) documented — reporting fix versions and workarounds.

Out of scope: this is a single-dependency lookup, not a full project dependency sweep (use dependency-audit for that). </objective>

CVE Research Skill

Overview

Research known vulnerabilities for project dependencies using multiple sources.

Data Sources

Source	API	Coverage
NVD	nvd.nist.gov/vuln/api	All CVEs
OSV.dev	api.osv.dev	npm, PyPI, Go, crates, Maven
GitHub Advisory	github.com/advisories	npm, pip, composer, cargo
Exa Search	Via MCP	Real-time web search

Workflow

1. Extract dependencies from project (package.json, etc.)
2. Query each source for known CVEs
3. Cross-reference findings across sources
4. Prioritize by CVSS score and exploitability
5. Report with fix versions and workarounds

Query Strategy

For each dependency:

1. Search OSV.dev first (fastest, most accurate for packages)
2. Cross-check NVD for CVSS scoring
3. Use Exa for recent advisories not yet in databases
4. Check GitHub Advisory for maintainer responses

Severity Mapping

CVSS Score	Severity	Action
9.0 - 10.0	CRITICAL	Fix immediately
7.0 - 8.9	HIGH	Fix before merge
4.0 - 6.9	MEDIUM	Plan fix
0.1 - 3.9	LOW	Document

References

• CVE APIs Reference
• Query Templates