CVE-2026-57217

RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass

Published: Jul 10, 2026Updated: Jul 13, 2026 Sources: CVE List NVDCWE-863

6.5MEDIUM

Description

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.21, 4.1.11, and 4.2.6, RabbitMQ topic authorization can allow restricted topic writes and binds during metadata-store failures because topic-permission lookup errors from Khepri can collapse to undefined, which the internal backend treats as allow. This issue is fixed in versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-863

Affected Products

rabbitmq

oss-project·GBaka rabbitmq-server

rabbitmq-serverOn-prem

Databases / cache-message-queue

broadcom

commercial·USaka broadcom inc

rabbitmq serverOn-prem

Cloud & SaaS

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-gpvw-75h5-3wvx

github.com

https://github.com/rabbitmq/rabbitmq-server/pull/15941

github.com

https://github.com/rabbitmq/rabbitmq-server/pull/15943

github.com

and 3 more references View all →

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