CVE-2026-57218 PUBLISHED

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.

• https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-wmrr-4h5v-5ch7
• https://github.com/rabbitmq/rabbitmq-server/pull/16092
• https://github.com/rabbitmq/rabbitmq-server/pull/16097
• https://github.com/rabbitmq/rabbitmq-server/commit/501ad947cd6bbcc9486fe96e0d073992bfe52cc4
• https://github.com/rabbitmq/rabbitmq-server/commit/db20d6c0fcf3056030f244b5adab0d45c0db0c9e
• https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6

• CWE-863: Incorrect Authorization CWE