v4.17.1

hexgrad/kokorov4.17.1Aug 31, 2026by github-actions[bot]

AI Summary

Updates OAuth security requirements by enforcing the use of S256 PKCE for CIMD clients to ensure secure authentication flows.

Key Highlights

Require S256 PKCE from CIMD clients
OAuth security enhancement
PKCE enforcement

Full Release Notes

## [4.17.1](https://github.com/punkpeye/fastmcp/compare/v4.17.0...v4.17.1) (2026-08-31)


### Bug Fixes

* **oauth:** require S256 PKCE from CIMD clients ([#348](https://github.com/punkpeye/fastmcp/issues/348)) ([7016fa0](https://github.com/punkpeye/fastmcp/commit/7016fa0e09233f6cd4e249fe961d598382ac521e))