Known vulnerabilities for a list of dependencies, npm and PyPI, in one call. Send {"npm":["lodash@4.17.20"],"pypi":["django==3.2.0"]} or a package.json or requirements.txt, up to 50 packages. Returns only packages that have advisories: OSV and GHSA ids, CVE aliases, severity, summary, and the first fixed version, plus counts. Unpinned packages are checked at their latest version. Deterministic OSV data, no LLM.

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