CVE-2026-67412: CWE-862: Missing Authorization in rabbitmq rabbitmq-server
CVE-2026-67412 is a vulnerability in RabbitMQ server versions from 3.13.0 up to but not including 4.3.3, 4.2.9, 4.1.14, 4.0.24, and 3.13.18. It involves missing authorization checks in the Federation upstream feature, allowing a policymaker on one virtual host (vhost) to read and drain messages from another vhost without permission. This breaks vhost tenancy and can result in unauthorized message consumption. The issue is fixed in the specified versions.
AI Analysis
Technical Summary
RabbitMQ versions 3.13.0 through versions prior to 4.3.3, 4.2.9, 4.1.14, 4.0.24, and 3.13.18 contain a missing authorization vulnerability (CWE-862) in the Federation upstream feature. The flaw allows cross-vhost message access because Federation validates the upstream URI without enforcing vhost access controls. Consequently, a policymaker on one vhost can read and drain messages from another vhost it lacks permission for. With the default acknowledgment mode, messages are consumed (deleted) rather than copied, leading to potential message loss and tenancy violations. The vulnerability is addressed in the fixed versions listed.
Potential Impact
An attacker or user with policymaker privileges on one vhost can access and consume messages from other vhosts without authorization. This breaks the isolation between vhosts, potentially leading to unauthorized data access and message loss. The impact is limited to cross-vhost message read and drain operations, with no indication of privilege escalation beyond this scope.
Mitigation Recommendations
This vulnerability is fixed in RabbitMQ versions 4.3.3, 4.2.9, 4.1.14, 4.0.24, and 3.13.18. Users should upgrade to these or later versions to remediate the issue. No additional mitigation steps are indicated beyond applying the official fixes.
CVE-2026-67412: CWE-862: Missing Authorization in rabbitmq rabbitmq-server
Description
CVE-2026-67412 is a vulnerability in RabbitMQ server versions from 3.13.0 up to but not including 4.3.3, 4.2.9, 4.1.14, 4.0.24, and 3.13.18. It involves missing authorization checks in the Federation upstream feature, allowing a policymaker on one virtual host (vhost) to read and drain messages from another vhost without permission. This breaks vhost tenancy and can result in unauthorized message consumption. The issue is fixed in the specified versions.
CVSS v4.0
Score 6.0medium
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 versions 3.13.0 through versions prior to 4.3.3, 4.2.9, 4.1.14, 4.0.24, and 3.13.18 contain a missing authorization vulnerability (CWE-862) in the Federation upstream feature. The flaw allows cross-vhost message access because Federation validates the upstream URI without enforcing vhost access controls. Consequently, a policymaker on one vhost can read and drain messages from another vhost it lacks permission for. With the default acknowledgment mode, messages are consumed (deleted) rather than copied, leading to potential message loss and tenancy violations. The vulnerability is addressed in the fixed versions listed.
Potential Impact
An attacker or user with policymaker privileges on one vhost can access and consume messages from other vhosts without authorization. This breaks the isolation between vhosts, potentially leading to unauthorized data access and message loss. The impact is limited to cross-vhost message read and drain operations, with no indication of privilege escalation beyond this scope.
Mitigation Recommendations
This vulnerability is fixed in RabbitMQ versions 4.3.3, 4.2.9, 4.1.14, 4.0.24, and 3.13.18. Users should upgrade to these or later versions to remediate the issue. No additional mitigation steps are indicated beyond applying the official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-29T15:02:20.412Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab6a25cf7a7c54106018e37
Added to database: 09/25/2026, 16:33:32 UTC
Last enriched: 09/25/2026, 16:48:25 UTC
Last updated: 09/25/2026, 17:02:23 UTC
Views: 5
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