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CVE-2026-67237

9.3 · CRITICAL

RabbitMQ is a messaging and streaming broker.

Published Sep 25, 2026broadcomCWE-79EPSS 0.45%

Overview

CVE-2026-67237 is a critical-severity vulnerability affecting broadcom rabbitmq_server. It was published on September 25, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from broadcom. Update rabbitmq_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
broadcomrabbitmq_server>= 4.2.0, < 4.2.8Affected

References

GitHubgithub.com/rabbitmq/rabbitmq-server/commit/5cd6d841d84450324a4613501ed917d98828af23GitHubgithub.com/rabbitmq/rabbitmq-server/commit/a8041d528c1a71af4cb75ade247ed082fe6b83fbGitHubgithub.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.8GitHubgithub.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.2GitHubgithub.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-2rf7-f6r6-8rwh

How CyberStrike helps

Frequently asked questions

What is CVE-2026-67237?

CVE-2026-67237 is a critical-severity vulnerability affecting broadcom rabbitmq_server. It was published on September 25, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

How severe is CVE-2026-67237?

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-67237?

Check the references section for vendor advisories and patches from broadcom. Update rabbitmq_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-67237?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-67237 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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