Is Certifi Safe?
Certifi — Nerq Trust Score 77.8/100 (B+ grade). Score based on 2 independent trust signals. Last analyzed: 2026-09-15
Certifi is a Python package with a Nerq Trust Score of 77.8/100 (B+), based on 3 independent data dimensions. Last analyzed: 2026-09-15 Security: 90/100. Popularity: 100/100. Data sourced from PyPI registry, GitHub repository, NVD, OSV.dev, and OpenSSF Scorecard. Last updated: 2026-09-15. Machine-readable data (JSON).
Is Certifi safe?
Trust Score Breakdown — Certifi has a Nerq Trust Score of 77.8/100 (B+). Measured across 2 independent trust signals (as of 2026-09-15).
What is Certifi's trust score?
Certifi has a Nerq Trust Score of 77.8/100, earning a B+ grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Certifi?
Certifi's strongest signal is popularity at 100/100. No known vulnerabilities have been detected.
What is Certifi and who maintains it?
| Author | Kenneth Reitz |
| Category | Python Packages |
| Source | N/A |
Certifi Across Platforms
Same developer/company in other registries:
Similar Pypi by Trust Score
Safety Guide: Certifi
What is Certifi?
Certifi is a Python package — Python package for providing Mozilla's CA Bundle..
How to Verify Safety
Run pip audit or safety check. Review on PyPI for download stats.
You can also check the trust score via API: GET /v1/preflight?target=certifi
Key Safety Concerns for Python package
When evaluating any Python package, watch for: dependency vulnerabilities, malicious uploads, maintenance status.
Measured Signals
Certifi has a Nerq Trust Score of 78/100 (B+). This score is a composite of automated measurements of security, maintenance, community, and quality signals.
Key Takeaways
- Certifi has a Trust Score of 78/100 (B+).
- The score is a measured composite — it is not a suitability judgment. Evaluate the individual signals against your own requirements.
- Query the current measured values via the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 90/100 |
| Maintenance | 100/100 |
| Popularity | 100/100 |
| Quality | 50/100 |
| Community | 35/100 |
Based on 5 dimensions. Data from PyPI registry, GitHub repository, NVD, OSV.dev, and OpenSSF Scorecard.
What data does Certifi collect?
Certifi is a Python package maintained by Kenneth Reitz. It receives approximately 456,191,182 weekly downloads. Licensed under MPL-2.0.
As a development package, Certifi does not directly collect end-user personal data. However, applications built with it may collect data depending on implementation. Privacy score: 80/100.
Review the package's dependencies for potential supply chain risks. Run your package manager's audit command regularly.
Full analysis: Certifi Privacy Report · Privacy review
Is Certifi secure?
Security score: 90/100. Certifi has 0 known vulnerabilities (CVEs) in the National Vulnerability Database. This is a clean record.
Licensed under MPL-2.0, allowing code inspection. Open-source packages allow independent security review of the source code.
Run your package manager's audit command (`npm audit`, `pip audit`, `cargo audit`) to check for known vulnerabilities in your dependency tree.
Full analysis: Certifi Security Report
Certifi Across Platforms
Same developer/company in other registries:
How we calculated this score
Certifi's trust score of 77.8/100 (B+) is computed from PyPI registry, GitHub repository, NVD, OSV.dev, and OpenSSF Scorecard. The score reflects 5 independent dimensions: security (90/100), maintenance (100/100), popularity (100/100), quality (50/100), community (35/100). Each dimension is weighted equally to produce the composite trust score.
Nerq analyzes over 7.5 million entities across 26 registries using the same methodology, enabling direct cross-entity comparison. Scores are updated continuously as new data becomes available.
Signals last measured on September 15, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
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Disclaimer: Nerq trust scores are automated measurements based on publicly available signals. They are not endorsements, verdicts, or guarantees of suitability. Always evaluate the signals against your own requirements.