certifi

(Python Distribution) A carefully curated collection of Root Certificates for validating the trustworthiness of SSL certificates while verifying the identity of TLS hosts.

Latest version: 2026.2.25 registry icon
Maintenance score
100
Safety score
72
Popularity score
71
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Security
  Vulnerabilities
Version Suggest Low Medium High Critical
2026.2.25 0 0 0 0 0
2026.1.4 0 0 0 0 0
2025.11.12 0 0 0 0 0
2025.10.5 0 0 0 0 0
2025.8.3 0 0 0 0 0
2025.7.14 0 0 0 0 0
2025.7.9 0 0 0 0 0
2025.6.15 0 0 0 0 0
2025.4.26 0 0 0 0 0
2025.1.31 0 0 0 0 0
2024.12.14 0 0 0 0 0
2024.8.30 0 0 0 0 0
2024.7.4 0 0 0 0 0
2024.6.2 0 0 0 1 0
2024.2.2 0 0 0 1 0
2023.11.17 0 0 0 1 0
2023.7.22 0 0 0 1 0
2023.5.7 0 0 0 1 1
2022.12.7 0 0 0 1 1
2022.9.24 0 0 0 2 1
2022.9.14 0 0 0 2 1
2022.6.15.2 0 0 0 2 1
2022.6.15.1 0 0 0 2 1
2022.6.15 0 0 0 2 1
2022.5.18.1 0 0 0 2 1
2022.5.18 0 0 0 2 1
2021.10.8 0 0 0 2 1
2021.5.30 0 0 0 2 1
2020.12.5 0 0 0 1 1
2020.11.8 0 0 0 1 1
2020.6.20 0 0 0 1 1
2020.4.5.2 0 0 0 1 1
2020.4.5.1 0 0 0 1 1
2020.4.5 0 0 0 1 1
2019.11.28 0 0 0 1 1
2019.9.11 0 0 0 1 1
2019.6.16 0 0 0 1 1
2019.3.9 0 0 0 1 1
2018.11.29 0 0 0 1 1
2018.10.15 0 0 0 1 1
2018.8.24 0 0 0 1 1
2018.8.13 0 0 0 1 1
2018.4.16 0 0 0 1 1
2018.1.18 0 0 0 1 1
2017.11.5 0 0 0 1 1
2017.7.27.1 0 0 0 0 1
2017.7.27 0 0 0 0 1
2017.4.17 0 0 0 0 1
2017.1.23 0 0 0 0 1
2016.9.26 0 0 0 0 1
2016.8.31 0 0 0 0 1
2016.8.8 0 0 0 0 1
2016.8.2 0 0 0 0 1
2016.2.28 0 0 0 0 1
2015.11.20.1 0 0 0 0 1
2015.11.20 0 0 0 0 1
2015.9.6.2 0 0 0 0 1
2015.9.6.1 0 0 0 0 1
2015.9.6 0 0 0 0 1
2015.04.28 0 0 0 0 1
14.05.14 0 0 0 0 0
1.0.1 0 0 0 0 0
1.0.0 0 0 0 0 0
0.0.8 0 0 0 0 0
0.0.7 0 0 0 0 0
0.0.6 0 0 0 0 0
0.0.5 0 0 0 0 0
0.0.4 0 0 0 0 0
0.0.3 0 0 0 0 0
0.0.2 0 0 0 0 0
0.0.1 0 0 0 0 0

Stability
Latest release:

2026.2.25 - This version is safe to use because it has no known security vulnerabilities at this time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform

Licensing

Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.

MPL-2.0   -   Mozilla Public License 2.0

Not a wildcard

Not proprietary

OSI Compliant



Certifi: Python SSL Certificates

Certifi provides Mozilla's carefully curated collection of Root Certificates for validating the trustworthiness of SSL certificates while verifying the identity of TLS hosts. It has been extracted from the Requests_ project.

Installation

certifi is available on PyPI. Simply install it with pip::

$ pip install certifi

Usage

To reference the installed certificate authority (CA) bundle, you can use the built-in function::

>>> import certifi

>>> certifi.where()
'/usr/local/lib/python3.7/site-packages/certifi/cacert.pem'

Or from the command line::

$ python -m certifi
/usr/local/lib/python3.7/site-packages/certifi/cacert.pem

Enjoy!

.. _Requests: https://requests.readthedocs.io/en/master/

Addition/Removal of Certificates

Certifi does not support any addition/removal or other modification of the CA trust store content. This project is intended to provide a reliable and highly portable root of trust to python deployments. Look to upstream projects for methods to use alternate trust.