Beyond known vulnerabilities, check whether a target's key open source packages are still maintained, reviewed and releasable. Look at release cadence, maintainer count, security policy and automated health signals such as OpenSSF Scorecard, then estimate what replacing the most critical ones would cost.
Start from what matters
You cannot study 1,500 packages. Rank by role:
- Packages in the request path or handling authentication, crypto and parsing.
- Packages with deep transitive reach.
- Packages with no easy substitute.
Review the top thirty to fifty by that ranking.
Signals to check
- Release cadence. Recent releases suggest activity. Long silence suggests risk.
- Maintainers. One maintainer is a bus factor of one.
- Security policy. Does the project say how to report vulnerabilities, and do fixes follow?
- Review practice. Does the project review changes before merging?
- Open issues. Unanswered security issues are a worry.
OpenSSF Scorecard automates several of these with checks such as Code-Review, Branch-Protection, Security-Policy, Signed-Releases, Pinned-Dependencies and Vulnerabilities, each scored 0 to 10. Treat scores as a starting point. A low score on a small, simple library may matter less than the number suggests.
Estimate replacement cost
For each critical package, answer: if it were abandoned tomorrow, could we fork it, swap it or live without it? Rate the effort in engineering weeks. Packages that rank high on both risk and effort go on the integration plan.
Check how the target consumes them
- Are versions pinned and updated on a schedule?
- Does the team track advisories for its top dependencies?
- Are private forks documented with upstream links?
- Do builds use a private mirror or fetch from public registries directly?
Watch for typosquats and odd names
Review dependency lists for near duplicate names of popular packages. Verify unfamiliar entries before accepting them as legitimate.
Safeguard's SBOM and dependency scanning and its zero-day discovery can support this review. A free scan is at https://gold.safeguard.sh/scan.
A short review routine
For each of the top packages, spend ten minutes. Open the repository and check the last release date, the number of active maintainers and the open security issues. Look for a security policy file. Check how fast the last advisory was fixed.
Record results in one table with columns for package, role, risk signals, replacement effort and decision. Decisions are accept, monitor, replace or fork.
Repeat quarterly after close. Dependency health changes: maintainers leave and projects change hands. The table gives you a baseline to compare against, and it feeds the integration plan with real priorities instead of a generic upgrade list.
Quick check
Is a low Scorecard score a deal breaker?
No. It prompts questions about that package. Weigh it against the package's role and replacement cost.
Sources
Last reviewed: 19 October 2026.
