# NATS v2.12.15 — Release v2.12.15

- Product: NATS (https://whatsnew.fyi/product/nats)
- Vendor: Synadia
- Date: 2026-08-12
- Version: v2.12.15
- Original notes: https://github.com/nats-io/nats-server/releases/tag/v2.12.15
- Permalink: https://whatsnew.fyi/product/nats/releases/v2.12.15

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- **fixed** — Fixed a deadlock that could occur in the logger when a close error occurs
- **fixed** — Fix a bug that could result in potential data loss when handling idempotent stream creates when an offline node catches up from a metalayer snapshot, caused by an incorrect update to the create time in the stream assignment

##### Changelog

###### Go Version

- 1.25.12

###### Dependencies

- github.com/klauspost/compress v1.19.2 (#8459)
- golang.org/x/crypto v0.55.0 (#8459) 

###### Fixed

General

- Fixed a deadlock that could occur in the logger when a close error occurs (#8430)

JetStream

- Fix a bug that could result in potential data loss when handling idempotent stream creates when an offline node catches up from a metalayer snapshot, caused by an incorrect update to the create time in the stream assignment (#8449)

###### Complete Changes
 
https://github.com/nats-io/nats-server/compare/v2.12.14...v2.12.15