Hackers Can Exploit RabbitMQ OAuth Flaw to Access Every Message, Queue, and User

Gbhackers •Kavichselvan • July 13, 2026

Security researchers have disclosed two access-control vulnerabilities in RabbitMQ, the open-source message broker used in an estimated 8% of all containers running today, that could allow attackers to seize full administrative control of a broker or silently map out sensitive queue data across shared tenants. Both flaws were discovered by Miggo Security’s autonomous research system, […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

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

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Hackers Can Exploit RabbitMQ OAuth Flaw to Access Every Message, Queue, and User

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