Auth bypass in Rabbitmq Rabbitmq-server

CVE-2026-57216

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is acce…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57216?
CVE-2026-57216 is a medium-severity vulnerability in Rabbitmq Rabbitmq-server, classified under Improper Authentication. CVSS score: 6.8/10. Published 2026-07-10.
How severe is CVE-2026-57216?
Medium severity. CVSS v3 base score is 6.8 out of 10.