python-sdk/SECURITY.md
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Present v2 as the stable release across the README, docs, and policies (#3178)
2026-07-28 14:31:36 +01:00

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# Security Policy
Thank you for helping keep the Model Context Protocol and its ecosystem secure.
## Supported Versions
| Version | Line | Support |
| ------------------------------------ | ----------------------- | ---------------------------------------- |
| 2.x (newest release) | current stable (`main`) | bug fixes, security fixes, new features |
| 1.28.x (`v1.x` branch) | maintenance | critical bug fixes and security fixes |
| < 1.28, and all pre-release versions | unsupported | upgrade to the newest 1.28.x or to 2.x |
Only the newest release of a supported line receives fixes, so reproduce against
it before reporting. If your project depends on `mcp` and is not yet ready for
2.x, constrain to `mcp>=1.28,<2` and follow the
[migration guide](https://py.sdk.modelcontextprotocol.io/migration/) when you
migrate.
## Reporting Security Issues
If you discover a security vulnerability in this repository, please report it through
the [GitHub Security Advisory process](https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing-information-about-vulnerabilities/privately-reporting-a-security-vulnerability)
for this repository.
Please **do not** report security vulnerabilities through public GitHub issues, discussions,
or pull requests.
## What to Include
To help us triage and respond quickly, please include:
- A description of the vulnerability
- Steps to reproduce the issue
- The potential impact
- Any suggested fixes (optional)