NestJS 11.1.28

NestJS 11.1.28 has been released — a maintenance patch that fixes three bugs and adds a minor enhancement for route path diagnostics.

Overview

This release, published July 8, 2026, is primarily a bugfix release for the NestJS core, common, and websockets packages. It also includes one enhancement that helps developers identify auto-converted legacy routes.

Bug Fixes

• Core: Fixed a bug where SSE (Server-Sent Events) producer Observables were not properly torn down when a client disconnected via an interceptor. This resolves potential memory leaks in real-time streaming endpoints. (#17239)
• Common: Added several missing exception classes to the HttpErrorByCode lookup map. Previously, certain HTTP error codes would return incorrect exception types when thrown through Nest's built-in exception filters. (#17257)
• WebSockets: Fixed a type guard in the WebSocket module that was incorrectly checking the value instead of the key, potentially causing unexpected behavior in gateway parameter validation. (#17188)

Enhancements

• Core: Auto-converted Express routes (e.g., @Get() with method name inference) now included in legacy route path warnings, making it easier to identify routes that may change behavior in future versions. (#17241)

Dependency Updates

• platform-fastify: Bumped fastify from 5.8.5 to 5.10.0
• platform-express: Updated multer to v2.2.0 (security update)

Migration Notes

No breaking changes are introduced in this release. Upgrade by bumping your @nestjs/core, @nestjs/common, and @nestjs/websockets dependencies to 11.1.28.

As always, run your test suite after upgrading to catch any regressions specific to your application's use of the affected APIs.