Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Broadcom | Rabbitmq Server | >= 3.13.0, < 4.2.6 |
Related Weaknesses (CWE)
References
- https://github.com/rabbitmq/rabbitmq-server/commit/709a14e49e06c138a8cd672c9809cPatch
- https://github.com/rabbitmq/rabbitmq-server/commit/dc3d1aa4f5c3331a425ee599b45bePatch
- https://github.com/rabbitmq/rabbitmq-server/pull/16085Issue TrackingPatch
- https://github.com/rabbitmq/rabbitmq-server/pull/16090Issue TrackingPatch
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6Release Notes
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-2ExploitVendor Advisory
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-2ExploitVendor Advisory
FAQ
What is CVE-2026-57221?
CVE-2026-57221 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 opera...
How severe is CVE-2026-57221?
CVE-2026-57221 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-57221?
Check the references section above for vendor advisories and patch information. Affected products include: Broadcom Rabbitmq Server.