CVE-2026-57221
RabbitMQ: Passive queue/exchange declaration bypasses authorization checks, leaking queue metadata to unprivileged users
Description
RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, RabbitMQ does not perform authorization checks on passive queue.declare and exchange.declare AMQP 0-9-1 operations, allowing any authenticated user who can connect to a virtual host to enumerate queue and exchange names and read queue message and consumer counts. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.
INFO
Published Date :
July 10, 2026, 9:16 p.m.
Last Modified :
July 13, 2026, 8:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update RabbitMQ to version 3.13.15 or later.
- Update RabbitMQ to version 4.0.20 or later.
- Update RabbitMQ to version 4.1.11 or later.
- Update RabbitMQ to version 4.2.6 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-57221.
| URL | Resource |
|---|---|
| https://github.com/rabbitmq/rabbitmq-server/commit/709a14e49e06c138a8cd672c9809ca34a2767962 | Patch |
| https://github.com/rabbitmq/rabbitmq-server/commit/dc3d1aa4f5c3331a425ee599b45be9423a2e83fc | Patch |
| https://github.com/rabbitmq/rabbitmq-server/pull/16085 | Issue Tracking Patch |
| https://github.com/rabbitmq/rabbitmq-server/pull/16090 | Issue Tracking Patch |
| https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 | Release Notes |
| https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2 | Exploit Vendor Advisory |
| https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-57221 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-57221
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-57221 vulnerability anywhere in the article.
-
The Hacker News
RabbitMQ Flaws Could Leak OAuth Secrets and Expose Cross-Tenant Queue Metadata
Cybersecurity researchers have disclosed details of two access control-related flaws impacting the RabbitMQ message broker service that could allow attackers to leak OAuth client secrets, expose enter ... Read more
-
The Cyber Express
RabbitMQ Vulnerability Exposes OAuth Secrets to Attackers
A newly disclosed RabbitMQ vulnerability, tracked as CVE-2026-5721, has raised concerns among enterprise users after researchers revealed that the flaw could allow unauthenticated attackers to retriev ... Read more
The following table lists the changes that have been made to the
CVE-2026-57221 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:* versions from (including) 3.13.0 up to (excluding) 4.2.6 Added Reference Type GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-server/commit/709a14e49e06c138a8cd672c9809ca34a2767962 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-server/commit/dc3d1aa4f5c3331a425ee599b45be9423a2e83fc Types: Patch Added Reference Type GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-server/pull/16085 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-server/pull/16090 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2 Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 13, 2026
Action Type Old Value New Value Added Reference https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2 Added SSVC {'id': 'CVE-2026-57221', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-13T18:05:20.433678Z'} -
New CVE Received by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'rabbitmq', 'product': 'rabbitmq-server', 'versions': [{'status': 'affected', 'version': '>= 4.2.0, < 4.2.6'}, {'status': 'affected', 'version': '>= 4.1.0, < 4.1.11'}, {'status': 'affected', 'version': '>= 4.0.0, < 4.0.21'}, {'status': 'affected', 'version': '>= 3.13.0, < 3.13.15'}]}] Added Description RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, RabbitMQ does not perform authorization checks on passive queue.declare and exchange.declare AMQP 0-9-1 operations, allowing any authenticated user who can connect to a virtual host to enumerate queue and exchange names and read queue message and consumer counts. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/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 Added CWE CWE-862 Added Reference https://github.com/rabbitmq/rabbitmq-server/commit/709a14e49e06c138a8cd672c9809ca34a2767962 Added Reference https://github.com/rabbitmq/rabbitmq-server/commit/dc3d1aa4f5c3331a425ee599b45be9423a2e83fc Added Reference https://github.com/rabbitmq/rabbitmq-server/pull/16085 Added Reference https://github.com/rabbitmq/rabbitmq-server/pull/16090 Added Reference https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 Added Reference https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2