CVE-2026-57218: Broadcom Rabbitmq Server

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, RabbitMQ AMQP 0-9-1 allows an existing consumer to keep receiving messages after OAuth token expiry or connection.update_secret refresh to reduced scopes because existing consumers are not canceled or reauthorized at delivery time after the channel user state changes. This issue is fixed in version 4.2.6.

Affected products

• Broadcom Rabbitmq Server: from 4.2.0, before 4.2.6 (fixed in 4.2.6)

Published 2026-07-10. Last modified 2026-07-13.