This page relates to the release notes of Nuxeo Server and related addons for LTS 2025 cycle. It will list the improvements and features that are successively shipped with the 2025.x releases.

What's New in LTS 2025.24 / LTS 2025-HF24

Add Synchronous I/O Opt-Out Properties for S3-Compatible Gateways

Two new nuxeo.conf properties — nuxeo.s3storage.syncDownload and nuxeo.s3storage.syncUpload — allow switching blob downloads and/or uploads to the synchronous Apache HTTP client to work around hangs with S3-compatible gateways.

The AWS CRT-based S3 transfer manager used by the S3 Blob Provider has been observed to hang against certain S3-compatible gateways. Two new independent nuxeo.conf properties allow forcing one or both I/O directions onto the synchronous Apache HTTP client (S3Client), bypassing the async transport entirely:

• nuxeo.s3storage.syncDownload — when true, blob downloads use the synchronous Apache HTTP client instead of the CRT-based transfer manager. Default: false.
• nuxeo.s3storage.syncUpload — when true, blob uploads use a single synchronous PutObject request instead of the CRT-based transfer manager. Default: false. This mode is limited to objects of 5 GiB or less; attempts to upload a larger blob are rejected immediately with an error before any S3 traffic.

These properties are independent. Enable only the direction that is problematic on your gateway. AWS S3 deployments are unaffected and should leave both properties at their default false values.

Unwrap CompletionException in S3BlobStore Async Read/Write Paths

S3BlobStore async read and write paths now unwrap CompletionException so callers consistently receive the underlying SdkException as the effective cause.

Use Versity S3 Gateway in Benchmark to Eliminate Cross-Cloud I/O Bottleneck During Data Import

Benchmark now uses a Versity S3 gateway.

DublinCoreListener Throws NPE When Dc:contributors Contains a Null Entry, Degrading MoveToColdStorage Throughput Under Batch Load

Stop persisting null values in dc:contributors.

A WARN is logged with the message "Skipping null contributor(s) for doc: {}" when a null value is submitted for dc:contributors.

The org.nuxeo.ecm.platform.dublincore.service.DublinCoreStorageServiceImpl logger can be enabled at DEBUG level to print a stack trace when a null value is submitted for dc:contributors.

OpenSearch Audit Backend Fails to Deserialize Log Entries With Missing or Null Entity-Type

OpenSearch audit backend now reads legacy log entries whose stored JSON had a missing or null "entity-type".

Security Fixes

This release also contains security fixes.

LTS 2025 Release Notes summary