---
title: HiveMQ 4.55.3 Maintenance Release
description: The HiveMQ team is pleased to announce the availability of HiveMQ 4.55.3.
date: 2026-11-03
author: HiveMQ Team
tags:
  - HiveMQ Release
source: https://www.hivemq.com/changelog/hivemq-4-55-3-released
---

# HiveMQ 4.55.3 Maintenance Release

The HiveMQ team is pleased to announce the availability of **HiveMQ 4.55.3**.

This maintenance release for the 4.55 series includes the following bug fixes and improvements:

## HiveMQ Enterprise MQTT Broker

- Added metrics from nodes that left the cluster to the diagnostic archive, for example, after a node restart or a Kubernetes pod change.
- Reduced the default metrics interval in the diagnostic archive to 5 seconds for more detailed troubleshooting.
- Updated the default `logback.xml` file to write event logs asynchronously to avoid reduced broker performance when many clients connect and disconnect frequently. If you customized your `conf/logback.xml` file, add the new asynchronous event log configuration manually during the upgrade.
- Improved HiveMQ broker performance on machines with 8 GB or less of RAM.
- Fixed an issue where a [native memory leak in RocksDB](https://github.com/facebook/rocksdb/issues/15036) during regular background operations could increase the memory usage of the broker.
- Fixed an issue where a cluster could stop accepting new or rejoining nodes if a node left the cluster during a join operation or if data replication failed.
- Fixed an issue where a malformed CONNECT packet could abort active trace recordings.
- Fixed an issue where consumer spans in distributed tracing were incorrectly marked as failed in some cases.
- Fixed an issue where, under TCP backpressure, the broker could send MQTT packets such as PINGRESP after it sent a `DISCONNECT` packet for a keep-alive timeout.
- Fixed an issue where extension consumers with overlapping topic filters could receive duplicate messages, which affected the Kafka, MongoDB, MySQL, PostgreSQL, Microsoft SQL Server, Data Lake, Snowflake, and Bridge extensions.

## HiveMQ Enterprise Security Extension

- Improved OpenID Connect authentication to accept role claims that contain a single string value, in addition to a list of values.
- Fixed an issue where a MySQL realm that uses MySQL Connector/J could not connect over TLS when its configuration listed more than one TLS protocol or cipher suite.

## HiveMQ Control Center

- Improved the diagnostic archive creation dialog to provide more options for the information that the archive includes.
- Improved error handling in the HiveMQ Control Center API to return simpler error responses.
- Disabled the details views of the *Queued Messages* and *Dropped Messages* charts on the *Overview* dashboard during maintenance mode.
- Fixed column sorting in the Trace Recordings view so that recordings appear in the selected order.

## HiveMQ Enterprise Data Lake Extension

- Improved the performance of the extension when the log level is set to DEBUG.
- Fixed an issue where an Azure Blob Storage route repeatedly retried an upload with the same file name if a blob with that name already existed.

## HiveMQ Enterprise Extension for Kafka

- Fixed intermittent load failures of custom transformers with multiple constructors in the Kafka extension by always using the public no-argument constructor.

[Get HiveMQ 4.55.3 now](https://releases.hivemq.com/hivemq-4.55.3.zip)

Have a great day,
*The HiveMQ Team*