CVE-2026-57216
Medium
Description
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 accepted through a trusted PROXY-protocol path and the backend listener is loopback-bound because the loopback check uses the listener-side socket address instead of the real client source. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.
SeverityMedium
CVSS6.8
Exploit probability—
Product
Broadcom Rabbitmq Server
PublishedJul 10, 2026
First seenJul 10, 2026
Weakness typeCWE-287Improper authentication
How to fix
Update
- broadcom rabbitmq_server3.13.15, 4.0.20, 4.1.11, 4.2.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| broadcom rabbitmq_server | 3.13.0 ≤ v < 3.13.15, 4.0.0 ≤ v < 4.0.20, 4.1.0 ≤ v < 4.1.11, 4.2.0 ≤ v < 4.2.6 | 3.13.15, 4.0.20, 4.1.11, 4.2.6 |
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