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NVD / CVE Program· CNA GitHub_M

CVE-2026-67218: RabbitMQ: Super-stream HTTP creation skips configure-permission check

Noroxi assessment

Priority: Monitor (action score 8/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.37% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: rabbitmq-server (Debian:14) 4.3.0-2; rabbitmq-server4.3 (Red Hat:hummingbird:1) 0:4.3.6-1.hum1.

Low priority for now. Upgrade to rabbitmq-server (Debian:14) 4.3.0-2; rabbitmq-server4.3 (Red Hat:hummingbird:1) 0:4.3.6-1.hum1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

LowCVSS 2.1 · v4.0—No exploit Fix available
Published
Sep 23, 2026
Updated
Oct 19, 2026
EPSS
0.3% · 30th percentile

Report tools

JSON

Action score

8

Monitor

Low priority for now.

CVSS
8 / 40 · 2.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
2.1
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
broadcomrabbitmq server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • broadcom rabbitmq server4.0.0 and later · before 4.0.22
  • broadcom rabbitmq server4.1.0 and later · before 4.1.11
  • broadcom rabbitmq server4.2.0 and later · before 4.2.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • rabbitmq rabbitmq-server

    • >= 4.0.0, < 4.0.22, >= 4.1.0, < 4.1.11, >= 4.2.0, < 4.2.6affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:13rabbitmq-serverfrom 0—
Debian:14rabbitmq-serverbefore 4.3.0-24.3.0-2
Red Hat:hummingbird:1rabbitmq-server4.3before 0:4.3.6-1.hum10:4.3.6-1.hum1

Same product

broadcom: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-57216RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks
    40Plan
  • CVE-2026-57211RabbitMQ: UNC SSRF affecting the management UI on Windows
    40Plan
  • CVE-2016-9877An issue was discovered in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6 and RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-66077Sep 23, 2026 · RabbitMQ: Stored XSS via TLS peer-certificate DN in management UI
    29Monitor
  • ← EarlierCVE-2026-66080Sep 23, 2026 · RabbitMQ: Super-stream partitions unbounded allocation
    23Monitor
  • Later →CVE-2026-67219Sep 23, 2026 · RabbitMQ: Consistent-hash exchange unbounded weight
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:rabbitmq-server4.3.0-2 · Debian:14Package registry (OSV)
red hat:rabbitmq-server4.30:4.3.6-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-672331 days apartRabbitMQ: Monitoring-tag user can DELETE shovels
    24Monitor
  • CVE-2026-674122 days apartRabbitMQ: Federation upstream skips vhost authorization allowing cross-vhost message access
    24Monitor
  • CVE-2026-5722175 days apartRabbitMQ: Passive queue/exchange declaration bypasses authorization checks, leaking queue metadata to unprivileged users
    21Monitor
  • CVE-2026-674072 days apartRabbitMQ: Incomplete fix for CVE-2026-44838: `escape_regex_char/1` does not escape `-`, leaving room for an MQTT topic permission bypass
    20Monitor
  • CVE-2026-672412 days apartRabbitMQ: AMQP 1.0 management exchange.declare skips alternate-exchange permission check
    19Monitor
  • CVE-2026-674212 days apartRabbitMQ: Stored HTML Injection in RabbitMQ Management OAuth Error Handling
    18Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
X

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

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References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records