# Security Policy

## Reporting a Vulnerability

If you discover a security vulnerability within this project, please report it via [Private Vulnerability Reporting](https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/new). 

Please do not report security vulnerabilities through public GitHub issues.

### What to Include
* Type of issue (e.g., buffer overflow, SQL injection, cross-site scripting).
* Full paths of source file(s) related to the manifestation of the issue.
* The location of the affected source code within those paths.
* Proof of concept (step-by-step instructions to reproduce the issue).
* Suggested remediation.

## Supported Versions

| Version              | Supported |
| -------------------- | --------- |
| >= 5.10.0            | ✅ |
| >= 4.0.0, < 5.10.0   | ❌ |
| >= 3.10.8, < 4.0.0   | ✅ |
| >= 3.0.0, < 3.10.8   | ❌ |
| >= 2.4.8, < 3.0.0    | ✅ |
| >= 2.2.0, < 2.4.8    | ❌ |
| >= 2.1.19, < 2.2.0   | ✅ |
| >= 2.0.0, < 2.1.19   | ❌ |
| >= 1.30.6, < 2.0.0   | ✅ |
| < 1.30.6             | ❌ |

## Disclosure Policy
We follow a coordinated vulnerability disclosure approach. We ask that you give us reasonable time to address the issue before making any public disclosures.