v12.1.1 v12.1.3
nestjs/nestSep 28, 2026 → Oct 12, 202614 days between releases
What's New
Adds SSE handling, fixes middleware execution, and introduces file upload limits
Breaking Changes
- Fails at startup for request-scoped class global enhancers
New Features
- Added field nesting and array index upload limits for Express and Fastify platforms
Improvements
- Improved shutdown sequence handling and logging for Express and Fastify
- Enhanced microservices reliability with connection fixes
- Improved middleware and global enhancer execution logic
Bug Fixes
- Fixed SSE lifecycle management and early disconnects
- Fixed middleware execution for transient providers and wildcard paths
- Fixed global enhancer execution for request-scoped classes
- Fixed Express middleware to run on bare global prefix path
- Fixed StreamableFile source destruction on client disconnect
Upgrade Notes
Request-scoped global enhancers will now fail at startup instead of being silently dropped. Review middleware exclusions if you rely on wildcard path handling.
The Two Releases
v12.1.1
Sep 28, 2026· 24 days ago
This release focuses on stabilizing the NestJS framework by addressing critical bugs in logging, microservices communication protocols (MQTT, NATS, Kafka), and circular dependency detection. It also introduces a new enhancement for deserializer exports and improves platform compatibility.
Full release notesv12.1.3
Oct 12, 2026· 10 days ago
This release focuses on stabilizing the NestJS framework by addressing numerous bug fixes across core modules, microservices, and websockets. Key improvements include handling SSE streams more robustly, fixing middleware execution logic, and enhancing the Fastify platform. Additionally, enhancements were added for file upload limits.
Full release notes