Bug 2499206 (CVE-2026-57221)

Summary: CVE-2026-57221 RabbitMQ: RabbitMQ: Information disclosure via authorization bypass in AMQP 0-9-1 operations
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: eglynn, jjoyce, jpretori, jschluet, lhh, mburns, mgarciac
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in RabbitMQ. This vulnerability allows an authenticated user, with the ability to connect to a virtual host, to bypass authorization checks during passive queue.declare and exchange.declare AMQP 0-9-1 (Advanced Message Queuing Protocol) operations. This bypass enables the user to enumerate queue and exchange names, and read queue message and consumer counts, leading to information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2507940    
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Description OSIDB Bzimport 2026-07-10 21:01:30 UTC
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.