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NVD / CVE Program· CNA GitHub_M

CVE-2026-57218: RabbitMQ: AMQP 0-9-1 in combination with OAuth 2: consumer persistence can lead to post-revocation message disclosure

MediumCVSS 4.9 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 19/100)

  • 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: 0.35% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: rabbitmq rabbitmq-server 4.2.6.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to rabbitmq rabbitmq-server 4.2.6 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 4.2.6, RabbitMQ AMQP 0-9-1 allows an existing consumer to keep receiving messages after OAuth token expiry or connection.update_secret refresh to reduced scopes because existing consumers are not canceled or reauthorized at delivery time after the channel user state changes. This issue is fixed in version 4.2.6.

Published
Jul 10, 2026
Updated
Oct 25, 2026
EPSS
0.3% · 29th percentile

Report tools

JSON

Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
4.9
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/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.

Follow CVE-2026-57218

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

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

    • >= 4.2.0, < 4.2.6affected

Affected versions

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

  • broadcom rabbitmq server4.2.0 and later · before 4.2.6

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:14rabbitmq-serverbefore 4.3.0-24.3.0-2
openSUSE:Leap 16.0rabbitmq-serverbefore 4.1.5-160000.2.14.1.5-160000.2.1
Red Hat:hummingbird:1rabbitmq-server4.2before 0:4.2.8-1.hum10:4.2.8-1.hum1
Red Hat:hummingbird:1rabbitmq-server4.3before 0:4.3.2-1.hum10:4.3.2-1.hum1
SUSE:Linux Enterprise Server 16.0rabbitmq-serverbefore 4.1.5-160000.2.14.1.5-160000.2.1

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…
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-57215Jul 10, 2026 · RabbitMQ: Direct-reply-to binding persistence can lead to unauthorized reply-channel injection and persistent phantom
    28Monitor
  • ← EarlierCVE-2026-57217Jul 10, 2026 · RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
    28Monitor
  • Later →CVE-2026-57219Jul 10, 2026 · RabbitMQ: Unauthenticated disclosure of OAuth client credentials via an HTTP API endpoint with certain less common OAuth 2 configurations
    35Monitor

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
rabbitmq rabbitmq-server4.2.6 · descriptionVendor (CNA)
debian:rabbitmq-server4.3.0-2 · Debian:14Package registry (OSV)
opensuse:rabbitmq-server4.1.5-160000.2.1 · openSUSE:Leap 16.0Package registry (OSV)
red hat:rabbitmq-server4.20:4.2.8-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:rabbitmq-server4.30:4.3.2-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
suse:rabbitmq-server4.1.5-160000.2.1 · SUSE:Linux Enterprise Server 16.0Package 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.

Patch and commit links

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

Variant candidates

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

  • CVE-2026-572150 days apartRabbitMQ: Direct-reply-to binding persistence can lead to unauthorized reply-channel injection and persistent phantom
    28Monitor
  • CVE-2026-572170 days apartRabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
    28Monitor
  • CVE-2026-6741177 days apartRabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass
    24Monitor
  • CVE-2026-4483844 days apartRabbitMQ MQTT Topic Permission Authorization Bypass
    21Monitor

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: EPSS history · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • 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
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (4 more)

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

All records