CVE-2026-67411
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
rabbitmq-server
- Vendor
- rabbitmq
- Product
- rabbitmq-server
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| >= 4.3.0, < 4.3.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 4.2.0, < 4.2.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 4.1.0, < 4.1.14 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 4.0.0, < 4.0.23 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 3.13.0, < 3.13.18 | affected | Unavailable | Unavailable | Unavailable | None listed |