CVE-2026-67218: CWE-862: Missing Authorization in rabbitmq rabbitmq-server
CVE-2026-67218 is a low-severity authorization vulnerability in rabbitmq-server prior to versions 4.0.22, 4.1.11, and 4.2.6. The issue allows users with management tag and vhost access but without configure permissions to create super-streams via the HTTP API, bypassing intended permission checks. This privilege escalation arises because the HTTP handler omits enforcement of configure permissions on exchanges and partition queues, unlike the native stream-protocol path. The vulnerability requires the rabbitmq_stream_management plugin to be enabled. It is fixed in the specified versions.
AI Analysis
Technical Summary
Rabbitmq-server versions before 4.0.22, 4.1.11, and 4.2.6 have a missing authorization check in the HTTP API handler for creating super-streams. While the native stream-protocol path enforces configure permissions on exchanges and partition queues, the HTTP handler calls rabbit_stream_manager:create_super_stream/2 directly after a limited authorization check that only verifies management tag and vhost access. This omission allows a user with management tag and vhost access but no configure permissions to create persistent cluster-wide resources (super-streams) via the HTTP API, resulting in privilege escalation. The vulnerability requires the rabbitmq_stream_management plugin to be enabled and is addressed in the fixed versions.
Potential Impact
An attacker with management tag and vhost access but lacking configure permissions can escalate privileges to create super-streams (exchanges and partition queues) cluster-wide via the HTTP API. This could lead to unauthorized creation of persistent messaging resources, potentially impacting cluster stability or resource usage. The CVSS score is low (2.1), reflecting limited impact and required privileges.
Mitigation Recommendations
Upgrade rabbitmq-server to version 4.0.22, 4.1.11, 4.2.6, or later where this issue is fixed. The fix enforces proper configure permission checks on the HTTP API path for creating super-streams. No additional mitigation is required if running a fixed version.
CVE-2026-67218: CWE-862: Missing Authorization in rabbitmq rabbitmq-server
Description
CVE-2026-67218 is a low-severity authorization vulnerability in rabbitmq-server prior to versions 4.0.22, 4.1.11, and 4.2.6. The issue allows users with management tag and vhost access but without configure permissions to create super-streams via the HTTP API, bypassing intended permission checks. This privilege escalation arises because the HTTP handler omits enforcement of configure permissions on exchanges and partition queues, unlike the native stream-protocol path. The vulnerability requires the rabbitmq_stream_management plugin to be enabled. It is fixed in the specified versions.
CVSS v4.0
Score 2.1low
Affected software
rabbitmq
rabbitmq-server
pkg:github/rabbitmq/rabbitmq-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Rabbitmq-server versions before 4.0.22, 4.1.11, and 4.2.6 have a missing authorization check in the HTTP API handler for creating super-streams. While the native stream-protocol path enforces configure permissions on exchanges and partition queues, the HTTP handler calls rabbit_stream_manager:create_super_stream/2 directly after a limited authorization check that only verifies management tag and vhost access. This omission allows a user with management tag and vhost access but no configure permissions to create persistent cluster-wide resources (super-streams) via the HTTP API, resulting in privilege escalation. The vulnerability requires the rabbitmq_stream_management plugin to be enabled and is addressed in the fixed versions.
Potential Impact
An attacker with management tag and vhost access but lacking configure permissions can escalate privileges to create super-streams (exchanges and partition queues) cluster-wide via the HTTP API. This could lead to unauthorized creation of persistent messaging resources, potentially impacting cluster stability or resource usage. The CVSS score is low (2.1), reflecting limited impact and required privileges.
Mitigation Recommendations
Upgrade rabbitmq-server to version 4.0.22, 4.1.11, 4.2.6, or later where this issue is fixed. The fix enforces proper configure permission checks on the HTTP API path for creating super-streams. No additional mitigation is required if running a fixed version.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-28T19:50:39.436Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab48379f7a7c54106b23c9f
Added to database: 09/24/2026, 01:57:13 UTC
Last enriched: 09/24/2026, 01:58:36 UTC
Last updated: 09/24/2026, 02:18:43 UTC
Views: 3
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