Allocation of Resources Without Limits or Throttling in RabbitMQ Server - CVE-2026-67230
Published: July 9, 2026 / Updated: September 28, 2026
Vulnerability identifier: #VU137249
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-67230
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in the WebSocket path in the Web-STOMP handler when processing pre-authentication STOMP frames over WebSocket connections. A remote attacker can send a slow trickle of single-byte frames to cause a denial of service.
The rabbitmq_web_stomp plugin must be enabled.
Affected software
RabbitMQ Server
PowerVC
PowerVC
How to mitigate CVE-2026-67230
Install security update from vendor's website.
RabbitMQ Server - addressed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6