CVE-2026-57217: CWE-863: Incorrect Authorization in rabbitmq rabbitmq-server
RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.21, 4.1.11, and 4.2.6, RabbitMQ topic authorization can allow restricted topic writes and binds during metadata-store failures because topic-permission lookup errors from Khepri can collapse to undefined, which the internal backend treats as allow. This issue is fixed in versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6.
AI Analysis
Technical Summary
RabbitMQ server versions before 3.13.15, 4.0.21, 4.1.11, and 4.2.6 have an authorization flaw (CWE-863) in topic permission enforcement. When the metadata store (Khepri) experiences failures, topic-permission lookup errors collapse to an undefined state, which the internal backend interprets as permission granted. This allows unauthorized topic writes and binds, potentially violating access controls. The vulnerability has a CVSS 4.0 score of 7.0 (high severity) and requires patching to the fixed versions to remediate.
Potential Impact
The vulnerability allows users with limited privileges to perform restricted topic writes and binds during metadata-store failures, effectively bypassing intended authorization controls. This could lead to unauthorized message publishing or binding to topics, potentially impacting message integrity and confidentiality within RabbitMQ deployments.
Mitigation Recommendations
A fix is available in RabbitMQ versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6. Users should upgrade affected RabbitMQ server instances to these versions or later to remediate the vulnerability. No additional mitigation guidance is provided by the vendor advisory.
CVE-2026-57217: CWE-863: Incorrect Authorization in rabbitmq rabbitmq-server
Description
RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.21, 4.1.11, and 4.2.6, RabbitMQ topic authorization can allow restricted topic writes and binds during metadata-store failures because topic-permission lookup errors from Khepri can collapse to undefined, which the internal backend treats as allow. This issue is fixed in versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6.
CVSS v4.0
Score 7.0high
Affected software
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 3.13.15, 4.0.21, 4.1.11, and 4.2.6 have an authorization flaw (CWE-863) in topic permission enforcement. When the metadata store (Khepri) experiences failures, topic-permission lookup errors collapse to an undefined state, which the internal backend interprets as permission granted. This allows unauthorized topic writes and binds, potentially violating access controls. The vulnerability has a CVSS 4.0 score of 7.0 (high severity) and requires patching to the fixed versions to remediate.
Potential Impact
The vulnerability allows users with limited privileges to perform restricted topic writes and binds during metadata-store failures, effectively bypassing intended authorization controls. This could lead to unauthorized message publishing or binding to topics, potentially impacting message integrity and confidentiality within RabbitMQ deployments.
Mitigation Recommendations
A fix is available in RabbitMQ versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6. Users should upgrade affected RabbitMQ server instances to these versions or later to remediate the vulnerability. No additional mitigation guidance is provided by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-24T02:21:33.810Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a515a8b68715ace432d8312
Added to database: 07/10/2026, 20:48:11 UTC
Last enriched: 07/18/2026, 15:37:15 UTC
Last updated: 08/24/2026, 10:52:10 UTC
Views: 83
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