CVE-2026-57214 rabbitmq CVE debrief

Who should care

Users of RabbitMQ, especially those with administrative access to the management UI, should be aware of this vulnerability and take steps to mitigate it. This includes upgrading to RabbitMQ version 4.2.5 or later, restricting access to the management UI to trusted users, and monitoring for suspicious activity in the management UI. Operators, platform administrators, vulnerability management teams, and security teams should review the affected product scope and take necessary actions to protect their environments.

Technical summary

The RabbitMQ management UI is vulnerable to JavaScript injection via the x-internal-purpose queue or exchange argument. This is due to improper escaping of user-supplied input in the HTML title attribute on the Queues and Exchanges pages. An attacker with permission to declare a queue or exchange can inject JavaScript code that will be executed in the browser of another user viewing the affected pages. The vulnerability is fixed in RabbitMQ version 4.2.5.

Defensive priority

High

Recommended defensive actions

• Upgrade to RabbitMQ version 4.2.5 or later
• Restrict access to the management UI to trusted users
• Monitor for suspicious activity in the management UI
• 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 2026-07-10T21:16:58.423Z and has not been modified since then. The NVD entry is currently 7.1 HIGH. There is limited information available about the vulnerability beyond the official CVE record and NVD entry. Defenders should verify the affected scope and severity with the vendor and review the official advisory for guidance. The RabbitMQ management UI renders the x-internal-purpose queue or exchange argument into an HTML title attribute without proper escaping on the Queues and Exchanges pages, allowing a user with permission to declare a queue or exchange to execute JavaScript in another user's browser.

Official resources