CVE-2026-66075

UNKNOWN 0.0

RabbitMQ: Monitoring-tag user can restart federation links

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, is_authorized/2 for the /federation-links/.../restart route uses is_authorized_monitor (accepts the monitoring tag), while allowed_methods permits DELETE and delete_resource/2 triggers rabbit_federation_link_sup:restart. There is no per-method elevation check and no comment marking it intentional. A read-only monitoring user can restart any federation link , a state-changing operation that disrupts message flow. Preconditions include rabbitmq_federation + rabbitmq_federation_management plugins enabled Attacker has credentials with the monitoring tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1.

CWE	CWE-862
Vendor	rabbitmq
Product	rabbitmq-server
Published	Sep 23, 2026

Stay Ahead of the Next One

Get instant alerts for rabbitmq rabbitmq-server

Be the first to know when new unknown vulnerabilities affecting rabbitmq rabbitmq-server are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

rabbitmq / rabbitmq-server

>= 3.13.0, < 3.13.15 >= 4.0.0, < 4.0.20 >= 4.1.0, < 4.1.11 >= 4.2.0, < 4.2.6 >= 4.3.0, < 4.3.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-g5v3-w5xg-62q2 github.com: https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 github.com: https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.1