PobyteFree vulnerability lookup for npm, PyPI, Maven, Go and more.

Probe every byte. Enter a package and version to check known CVEs, CVSS scores and fix versions in seconds.

  • 100% free
  • No signup
  • Instant results

Import from package.json

Drop a package.json file or choose one — we read the dependencies field.

01

Identify

Package name plus an exact version

02

Match

Searches public vulnerability data

03

Fix

CVSS score and minimum fixed version

Free, fast, no account

A free vulnerability checker for open-source dependencies

Pobyte is a free, no-signup vulnerability lookup tool for open-source packages. Enter a package name and version — or upload a package.json — and see every known vulnerability that affects that exact version.

Results include CVE and GHSA IDs, severity, CVSS scores, affected version ranges, the minimum fixed version and a readable summary. No dashboard to learn, no account to create.

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  • 100% free
  • No signup
  • Instant results

Supported ecosystems

Query npm, PyPI, Maven, Go, RubyGems and crates.io directly, or use generic mode to search across every indexed ecosystem. CVE records and GitHub Advisories are included automatically.

  • Generic (all ecosystems)
  • npm
  • PyPI
  • Maven
  • Go
  • RubyGems
  • crates.io