# Security Policy

## Supported Versions

Explanation on supported versions [here](https://github.com/certbot/certbot/wiki/Architectural-Decision-Records#-update-to-certbots-version-policy-and-end-of-life-support-on-previous-major-versions)

| Major Version | Support Level |
| ------- | ------------------ |
| >= 5.0  | Full Support |
| 4.x     | Discretionary Backports |
| <=3.x   | None |


## Reporting a Vulnerability

Security vulnerabilities can be reported using GitHub's [private vulnerability reporting tool](https://github.com/certbot/certbot/security/advisories/new).
