---
id: CVE-2026-67408
title: RabbitMQ is a messaging and streaming broker
summary: >-
  RabbitMQ is a messaging and streaming broker. From 4.1.0 until 4.3.3, 4.2.9,
  and 4.1.11, Stream Management Super-Stream Binding Keys Allocation Allows
  Low-Privilege Node Denial of Service. rabbitMQ 4.3.1 with
  rabbitmqstreammanagement ena…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-408
vendor: broadcom
product: rabbitmq_server
affected:
  - 'rabbitmq_server >= 4.1.0, < 4.1.11'
  - 'rabbitmq_server >= 4.2.0, < 4.2.9'
  - 'rabbitmq_server >= 4.3.0, < 4.3.3'
patched:
  - rabbitmq_server 4.3.3
published: '2026-09-25'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T15:33:05.360'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67408'
references:
  - url: >-
      https://github.com/rabbitmq/rabbitmq-server/commit/0f3defd176e027f54f447beee168d906d4f109b6
    label: security-advisories@github.com
  - url: >-
      https://github.com/rabbitmq/rabbitmq-server/commit/eb11bc44005fd6d327a78bf171bc598207778c9b
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9'
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3'
    label: security-advisories@github.com
  - url: >-
      https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-2hm4-4438-49q8
    label: security-advisories@github.com
  - url: >-
      https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-2hm4-4438-49q8
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-67408.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-67408'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541516'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-67408'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67408'
  - url: 'https://access.redhat.com/errata/RHSA-2026:67552'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
epss: 0.00445
epssPercentile: 0.38528
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-25T19:09:46.402384Z'
scores:
  nvd: 6.5
  cna: 7.1
  vendor: 6.5
ingestedAt: '2026-09-25T17:13:14.020Z'
---

## Overview

RabbitMQ is a messaging and streaming broker. From 4.1.0 until 4.3.3, 4.2.9, and 4.1.11, Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service. rabbitMQ 4.3.1 with rabbitmqstreammanagement enabled accepts PUT /api/stream/super-streams/{vhost}/{name} requests from an authenticated management user that can access the target vhost. When the request body contains the binding-keys field, the handler parses the attacker-controlled comma-separated string and builds the full stream-name list before checking whether the user has permission to configure the resulting streams. A low-privileged management user with vhost access but no configure, write, or read permission can therefore force large transient allocations before the resource permission check. In a 768 MB memory-limited container, one HTTP PUT with about 4.5 MB of JSON body killed the RabbitMQ container with Docker state exited true An authenticated low-privileged management user can kill a memory-limited RabbitMQ node with one HTTP This issue is fixed in versions 4.3.3, 4.2.9, and 4.1.11.

## Affected

- `rabbitmq_server >= 4.1.0, < 4.1.11`
- `rabbitmq_server >= 4.2.0, < 4.2.9`
- `rabbitmq_server >= 4.3.0, < 4.3.3`

## Remediation

Upgrade past the affected range:

- `rabbitmq_server 4.3.3`

## Vendor advisories

- **RHSA-2026:67552** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:67552)
- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images, Red Hat OpenStack Platform 13 (Queens), Red Hat OpenStack Platform 16.2, Red Hat OpenStack Platform 17.1, Red Hat OpenStack Platform 18.0 · no fix planned: Red Hat OpenStack Platform 13 (Queens), Red Hat OpenStack Platform 16.2, Red Hat OpenStack Platform 17.1, Red Hat Hardened Images, … · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-67408.json)