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VulnerabilityPublished

CVE-2026-67218: rabbitmq-server · Missing Authorization

Affects rabbitmq-serverSource CVE Database V5

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Not known to be exploited · CVSS 2.1 Low · fixed in 4.2.6 : update rabbitmq-server when convenient.

Data as of 6 Nov 2026, 23:24 UTC

CVSS 4.0 base score
2.1Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.2.6, 4.1.11, 4.0.22
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade rabbitmq-server and rabbitmq/rabbitmq-server to 4.2.6, 4.1.11 or 4.0.22.

Affected software

ProductAffectedFixed in
rabbitmqrabbitmq-serverAffected
  • >=4.2.0 <4.2.6
Fixed in
  • 4.2.6
rabbitmqrabbitmq-serverAffected
  • >=4.1.0 <4.1.11
Fixed in
  • 4.1.11
rabbitmqrabbitmq-serverAffected
  • >=4.0.0 <4.0.22
Fixed in
  • 4.0.22
GitHubrabbitmq/rabbitmq-serverpkg:github/rabbitmq/rabbitmq-serverOther threatsAffected
  • >=4.0.0 <4.0.22
  • >=4.1.0 <4.1.11
  • >=4.2.0 <4.2.6
Fixed in
  • 4.0.22
  • 4.1.11
  • 4.2.6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade rabbitmq-server to version 4.0.22, 4.1.11, 4.2.6, or later where this issue is fixed. The fix enforces proper configure permission checks on the HTTP API path for creating super-streams.

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.

References

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