Detections
Analytics

RabbitMQ 4.0.x < 4.0.22 / 4.1.x < 4.1.14 / 4.2.x < 4.2.7 / 4.3.x < 4.3.1 Atom Exhaustion via Global Parameter Name

medium Nessus Plugin ID 362553

Synopsis

The RabbitMQ installed on the remote host is affected by a denial of service vulnerability.

Description

The version of RabbitMQ installed on the remote host is 4.0.x prior to 4.0.22, or 4.1.x prior to 4.1.14, or 4.2.x prior to 4.2.7, or 4.3.x prior to 4.3.1. It is, therefore, affected by a denial of service vulnerability:

 - resource_exists/2, and the PUT and DELETE handlers, call rabbit_data_coercion:to_atom/1 on the :name URL path segment of the global parameters endpoint, and to_atom/1 uses the unsafe binary_to_atom/2. A user holding only the policymaker tag can crash the node by exhausting the atom table through repeated requests to /api/global-parameters/:name with unique names. (CVE-2026-67227)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to RabbitMQ version 4.0.22, 4.1.14, 4.2.7, 4.3.1, or later.

See Also

http://www.nessus.org/u?92d83c25

Plugin Details

Severity: Medium

ID: 362553

File Name: rabbitmq_global_param_atom_4_0_22.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 10/2/2026

Updated: 10/2/2026

Configuration: Enable paranoid mode, Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-67227

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4

Risk Factor: Medium

Base Score: 5.9

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

Vulnerability Information

CPE: cpe:/a:pivotal_software:rabbitmq, cpe:/a:vmware:rabbitmq

Required KB Items: installed_sw/RabbitMQ, Settings/ParanoidReport

Patch Publication Date: 7/23/2026

Vulnerability Publication Date: 7/23/2026

Reference Information

CVE: CVE-2026-67227