v2.12.11

envoyproxy/envoyv2.12.11Jun 9, 2026by github-actions[bot]

AI Summary

Upgrades Go version and fixes a JetStream regression that caused stale subject state tracking and message lookup errors.

Key Highlights

Upgraded Go version to 1.25.11
Fixed JetStream regression for max messages per subject limit
Resolved 'Message Not Found' errors

New Features

JetStream bug fix
Go version upgrade

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