CVE-2026-57215 rabbitmq CVE debrief

Who should care

Users of RabbitMQ, especially those using versions prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, should be aware of this vulnerability and take steps to upgrade or mitigate. This includes RabbitMQ administrators, security teams, and operators who manage RabbitMQ instances.

Technical summary

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, RabbitMQ allows foreign bindings to amq.rabbitmq.reply-to destinations because volatile direct-reply-to queues can be accepted at bind and route time but are missing from Khepri-backed deletion checks, leaving persistent route entries after unbind. This issue can be mitigated by upgrading to RabbitMQ versions 3.13.15, 4.0.20, 4.1.11, or 4.2.6 or later.

Defensive priority

High

Recommended defensive actions

• Upgrade to RabbitMQ version 3.13.15, 4.0.20, 4.1.11, or 4.2.6 or later
• Review and update RabbitMQ configurations to prevent foreign bindings to amq.rabbitmq.reply-to destinations
• Monitor RabbitMQ instances for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-10T21:16:58.550Z and has not been modified since then. The NVD entry is currently 7.0 HIGH. There is limited information available about the specific details of this vulnerability, and defenders should verify the affected scope and severity with the vendor. The RabbitMQ versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6 or later are recommended for mitigation.

Official resources