CVE-2026-57221

nvd.nist.gov • July 15, 2026

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.

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Critical RabbitMQ Vulnerabilities Enable Broker Takeover via OAuth Secrets Miggo Security discovered two critical vulnerabilities in RabbitMQ, a widely used open-source message broker. The flaws, CVE-2026-57219 and CVE-2026-57221, were present since early 2024 and allow unauthenticated attackers to access OAuth client secrets and authenticated users to enumerate queues and exchanges. CVE-2026-57219, with a CVSS score of 8.7, exposes the OAuth client secret through an obsolete management endpoint, enabling full broker takeover. CVE-2026-57221, with a CVSS score of 5.3, allows low-privileged users to view sensitive metadata. Both vulnerabilities affect RabbitMQ versions from 3.13.0 onward and have been patched in the latest releases. Organizations are advised to apply patches immediately and rotate any exposed OAuth secrets. 6 sources 73

Extracted Entities

CVE-2026-57221

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Extracted Entities

Attack Types (1)

CVEs (1)

CWE Weaknesses (2)

Platforms (1)