v2.12.11

TabbyML/tabbyv2.12.11Jun 9, 2026by github-actions[bot]

AI Summary

This release addresses a regression in JetStream that caused stale subject state tracking, resulting in 'Message Not Found' errors when a max messages per subject limit is configured.

Key Highlights

Fixed JetStream stale subject state tracking regression
Resolved 'Message Not Found' errors with max messages per subject limits
Upgraded Go version to 1.25.11

Full Release Notes

## Changelog

Refer to the [2.12 Upgrade Guide](https://docs.nats.io/release-notes/whats_new/whats_new_212) for backwards compatibility notes with 2.11.x.

### Go Version

- 1.25.11

### Fixed

JetStream

- Fixed a regression introduced in v2.12.7 which could result in stale subject state tracking which could manifest in "Message Not Found" errors when a max messages per subject limit is configured (#8285)
  - Please note that v2.14.x versions are not affected

### Complete Changes
 
https://github.com/nats-io/nats-server/compare/v2.12.10...v2.12.11