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Describe the maintenance line without hardcoding 1.28 (#3212)

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Max 2026-07-29 14:54:45 +01:00 • committed by GitHub
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SECURITY.md
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@ -4,15 +4,15 @@ 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 |
| Version | Line | Support |
| ---------------------------------------- | ----------------------- | ------------------------------------------- |
| 2.x (newest release) | current stable (`main`) | bug fixes, security fixes, new features |
| 1.x newest release (`v1.x` branch) | maintenance | critical bug fixes and security fixes |
| older 1.x releases, and all pre-releases | unsupported | upgrade to the newest 1.x release 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
2.x, keep a `<2` upper bound on your `mcp` requirement and follow the
[migration guide](https://py.sdk.modelcontextprotocol.io/migration/) when you
migrate.