CVE-2026-67411
MEDIUM
6,0
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
Description
AI Translation Available
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.
863
Incorrect Authorization
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Access Control
Availability
Potential Impacts:
Read Application Data
Read Files Or Directories
Modify Application Data
Modify Files Or Directories
Gain Privileges Or Assume Identity
Bypass Protection Mechanism
Execute Unauthorized Code Or Commands
Dos: Crash, Exit, Or Restart
Dos: Resource Consumption (Cpu)
Dos: Resource Consumption (Memory)
Dos: Resource Consumption (Other)
Applicable Platforms
Technologies:
Web Server, Database Server, Not Technology-Specific
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-4r6f-9cpw-…
https://github.com/rabbitmq/rabbitmq-server/commit/a7528314840c4f8dc9904684f9f9…
https://github.com/rabbitmq/rabbitmq-server/commit/edbead0eabbd65925d0dc914a22d…
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-4r6f-9cpw-…