CVE-2026-61837: rabbitmq server from 4.0.0 (inclusive), before 4.0.23 (exclusive), from 4.1.0 (inclusive), before 4.1.14 (exclusive)…

Affected technology

rabbitmq server · from 4.0.0 (inclusive), before 4.0.23 (exclusive)
broadcom

rabbitmq server · from 4.1.0 (inclusive), before 4.1.14 (exclusive)
broadcom

rabbitmq server · from 4.2.0 (inclusive), before 4.2.9 (exclusive)
broadcom

rabbitmq server · from 4.3.0 (inclusive), before 4.3.3 (exclusive)
broadcom

rabbitmq-server · >= 4.3.0, < 4.3.3, >= 4.2.0, < 4.2.9, >= 4.1.0, < 4.1.14, >= 4.0.0, < 4.0.23
rabbitmq

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

0 user can enumerate the complete routing topology of any virtual host it can connect to , every (source exchange, destination queue/exchange, routing key, binding arguments) This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23. Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality, integrity and availability impact as none.