v4.15.3

punkpeye/fastmcpv4.15.3Aug 17, 2026by github-actions[bot]

AI Summary

Ensures that session identifiers remain valid even if the underlying transport connection is terminated prematurely.

Key Highlights

Latch resolved sessionId to survive transport teardown

Full Release Notes

## [4.15.3](https://github.com/punkpeye/fastmcp/compare/v4.15.2...v4.15.3) (2026-08-17)


### Bug Fixes

* latch the resolved sessionId so it survives transport teardown ([f6b6777](https://github.com/punkpeye/fastmcp/commit/f6b6777ed344572ec1ad804e3c6f01c0359fb857))