USN-8869-1: RabbitMQ Server vulnerability

Publication date

6 October 2026

Overview

RabbitMQ Server could be made to crash if it received specially crafted network traffic.


Packages

Details

It was discovered that RabbitMQ Server incorrectly handled certain HTTP/2
headers. An attacker could possibly use this issue to cause a denial of
service via memory exhaustion.

It was discovered that RabbitMQ Server incorrectly handled certain HTTP/2
headers. An attacker could possibly use this issue to cause a denial of
service via memory exhaustion.

Update instructions

After a standard system update you need to restart RabbitMQ Server to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute rabbitmq-server –  4.0.5-10ubuntu5.1
24.04 LTS noble rabbitmq-server –  3.12.1-1ubuntu1.6
22.04 LTS jammy rabbitmq-server –  3.9.27-0ubuntu0.5
20.04 LTS focal rabbitmq-server –  3.8.3-0ubuntu0.3+esm1  

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