CVE-2026-57217
RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-gpvw-75h5-3wvx
- https://github.com/rabbitmq/rabbitmq-server/pull/15941
- https://github.com/rabbitmq/rabbitmq-server/pull/15943
- https://github.com/rabbitmq/rabbitmq-server/commit/94f1d33a70fcfa09006649599e79fc92786a2d36
- https://github.com/rabbitmq/rabbitmq-server/commit/ce1f682aa6b398820c5e3ce1ff7435184027c82c
References (6)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Quick Info
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