Resource exhaustion in RabbitMQ Server - #VU139300
Published: July 24, 2026
Vulnerability identifier: #VU139300
CSH Severity: Low
CVSS v4 BT: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in rabbit_stream_super_stream_mgmt.erl when handling PUT requests to /api/stream/super-streams/{vhost}/{name} with a binding-keys field. A remote user can send a specially crafted request body to cause a denial of service.
Only instances with the rabbitmq_stream_management feature enabled are vulnerable, and reliable node termination was demonstrated in deployments running under a hard memory limit.
Affected software
RabbitMQ Server
Remediation
Install security update from vendor's website.
RabbitMQ Server - addressed in versions 4.1.11, 4.2.9, 4.3.3