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OpenAdvisories
Low · 2.1 CVE-2026-67218 EUVD-2026-85663

RabbitMQ: Super-stream HTTP creation skips configure-permission check

Published Sep 23, 2026 · Updated Sep 24, 2026 · Assigned by GitHub_M

Description

RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, accept_content/2 at line 56 calls rabbit_stream_manager:create_super_stream/... directly after is_authorized (which only checks the management tag + vhost access via is_authorized_vhost). The stream-protocol equivalent (rabbit_stream_reader.erl create_super_stream handler) calls rabbit_stream_utils:check_super_stream_management_permitted/4 which enforces configure on the exchange and each partition queue. The HTTP handler omits this call entirely. A user with management tag and vhost access , but no configure permission on any resource , can create super-streams (an exchange + N partition stream queues + bindings) via the HTTP API. The native stream-protocol path enforces configure on each resource; the HTTP path does not, creating a privilege escalation from 'can view' to 'can create persistent cluster-wide resources.' Preconditions include rabbitmq_stream_management plugin enabled management tag + vhost access (no resource permissions needed). This issue is fixed in versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0.

Affected products

VendorProductAffectedFixed
rabbitmq rabbitmq-server >= 4.0.0, < 4.0.22, >= 4.1.0, < 4.1.11, >= 4.2.0, < 4.2.6 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 rabbitmq-server 4.3.0-2 —
Debian 13 rabbitmq-server No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS rabbitmq-server No fix yet —
Ubuntu 24.04 LTS rabbitmq-server No fix yet —
Ubuntu 22.04 LTS rabbitmq-server No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS rabbitmq-server No fix yet —
Ubuntu Pro 18.04 LTS rabbitmq-server No fix yet —
Ubuntu Pro 16.04 LTS rabbitmq-server No fix yet —
ReleasePackageFixed inAdvisory
Red Hat Hardened Images 1 rabbitmq-server4.3 4.3.6-1.hum1 RHSA-2026:67552

Advisories 2

References