CVE-2026-67237

rabbitmq-server: RabbitMQ is a messaging and streaming broker

CVE-2026-67237 is fixed in rabbitmq-server on 1 platform, first by rabbitmq-server 4.0.5-10ubuntu5.2, released September 25, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
9.3
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0045
39th percentile

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, set_token_auth/2 inserted a bearer token from the Authorization header or access_token cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the management UI origin. The endpoint is exposed before authentication only when management.oauth_enabled is true, and exploitation through the cookie path additionally requires the attacker to plant an access_token cookie on the management host. This issue is fixed in versions 4.2.8 and 4.3.2.

Where it's fixed

ProductFixed inFixReleased
Linux
rabbitmq-server · Debian 14 4.3.2-1 DEBIAN-CVE-2026-67237 Sep 26, 2026
rabbitmq-server · Ubuntu 18.04.6 LTS (bionic) 3.6.10-1ubuntu0.5+esm1 rabbitmq-server 3.6.10-1ubuntu0.5+esm1 Oct 19, 2026
rabbitmq-server · Ubuntu 20.04 LTS (focal) 3.8.3-0ubuntu0.3+esm2 rabbitmq-server 3.8.3-0ubuntu0.3+esm2 Oct 19, 2026
rabbitmq-server · Ubuntu 22.04.1 LTS (jammy) 3.9.27-0ubuntu0.6 rabbitmq-server 3.9.27-0ubuntu0.6 Oct 19, 2026
rabbitmq-server · Ubuntu 24.04.5 LTS (noble) 3.12.1-1ubuntu1.7 rabbitmq-server 3.12.1-1ubuntu1.7 Oct 19, 2026
rabbitmq-server · Ubuntu 26.04.1 LTS (resolute) 4.0.5-10ubuntu5.2 rabbitmq-server 4.0.5-10ubuntu5.2 Sep 25, 2026

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