Medium severity5.0NVD Advisory· Published Jul 10, 2026· Updated Jul 13, 2026
CVE-2026-57221
CVE-2026-57221
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.
Affected products
3- cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*Range: >=3.13.0,<4.2.6
- Range: <3.13.15, <4.0.20, <4.1.11, <4.2.6
- Range: <3.13.15, <4.0.20, <4.1.11, <4.2.6
Patches
Vulnerability mechanics
References
6- github.com/rabbitmq/rabbitmq-server/commit/709a14e49e06c138a8cd672c9809ca34a2767962nvdPatch
- github.com/rabbitmq/rabbitmq-server/commit/dc3d1aa4f5c3331a425ee599b45be9423a2e83fcnvdPatch
- github.com/rabbitmq/rabbitmq-server/pull/16085nvdIssue TrackingPatch
- github.com/rabbitmq/rabbitmq-server/pull/16090nvdIssue TrackingPatch
- github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-9q2j-2hq8-22r2nvdExploitVendor Advisory
- github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6nvdRelease Notes
News mentions
4- ⚡ Weekly Recap: WordPress RCE, SonicWall 0-Days, AI Service Attacks, SharePoint 0-Day and MoreThe Hacker News · Jul 20, 2026
- RabbitMQ: Nine Vulnerabilities Disclosed Together, Threatening Authentication and Data IntegrityVypr Intelligence · Jul 18, 2026
- RabbitMQ Flaws Could Leak OAuth Secrets and Expose Cross-Tenant Queue MetadataThe Hacker News · Jul 14, 2026
- RabbitMQ Vulnerability Threatens Enterprise SystemsSecurityWeek · Jul 13, 2026