CVE-2026-57216

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is accepted through a trusted PROXY-protocol path and the backend listener is loopback-bound because the loopback check uses the listener-side socket address instead of the real client source. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47	Patch
https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112	Patch
https://github.com/rabbitmq/rabbitmq-server/pull/15936	Issue Tracking Patch
https://github.com/rabbitmq/rabbitmq-server/pull/15940	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-36m6-588r-vqcw	Exploit Vendor Advisory
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-10 21:16

Updated : 2026-07-13 21:09

NVD link : CVE-2026-57216

Mitre link : CVE-2026-57216

CVE.ORG link : CVE-2026-57216

JSON object : View

Products Affected

broadcom

rabbitmq_server

CWE

CWE-287

Improper Authentication

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