BIT-rabbitmq-2026-67411

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/rabbitmq/BIT-rabbitmq-2026-67411.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-rabbitmq-2026-67411
Aliases
Published
2026-10-01T09:33:52Z
Modified
2026-10-01T10:10:49Z
Summary
RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass
Details

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopback_users, causing the frontend-to-broker address to be treated as loopback. An attacker who can reach the trusted frontend and has valid credentials for a loopback-restricted account can therefore bypass the source-address restriction; the issue does not bypass password authentication. This issue is fixed in versions 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3.

Database specific 
{
    "cpes":  [
        "cpe:2.3:a:vmware:rabbitmq:*:*:*:*:*:*:*:*"
    ],
    "severity":  "Medium"
}
References

Affected packages

Bitnami / rabbitmq

Package

Name
rabbitmq
Purl
pkg:bitnami/rabbitmq

Severity

  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
3.13.0
Fixed
3.13.18
Introduced
4.0.0
Fixed
4.0.23
Introduced
4.1.0
Fixed
4.1.14
Introduced
4.2.0
Fixed
4.2.9
Introduced
4.3.0
Fixed
4.3.3

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/rabbitmq/BIT-rabbitmq-2026-67411.json"