CVE-2026-66075

RabbitMQ: Monitoring-tag user can restart federation links

Published: Sep 23, 2026Updated: Sep 23, 2026 Sources: CVE List NVDCWE-862

N/ACVSS

NVD MITRE

Description

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.

No summary for this CVE yet.

Weaknesses

CWE-862

Affected Products

rabbitmq

oss-project·GBaka rabbitmq-server

rabbitmq-serverOn-prem

Databases / cache-message-queue

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques

Initial Access

View detailed technique mapping

References

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6

github.com

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.1

github.com

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-g5v3-w5xg-62q2

github.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-66075 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows