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CVE-2026-67413

6.5 · MEDIUM

RabbitMQ is a messaging and streaming broker.

Published Sep 25, 2026broadcomCWE-1333EPSS 0.49%

Overview

CVE-2026-67413 is a medium-severity vulnerability affecting broadcom rabbitmq_server. It was published on September 25, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.23, 4.1.14, 4.2.9, and 4.3.3, the optional rabbitmq_jms_topic_exchange plugin's x-jms-topic exchange accepted a client-controlled rjms_erlang_selector binding expression whose LIKE evaluator expanded percent and underscore wildcards into overlapping PCRE fragments. It executed those fragments with raw re:run/3 without match or recursion limits, allowing an authenticated tenant that can bind and publish to consume broker scheduler CPU and deny service with pathological selectors. This issue is fixed in versions 4.0.23, 4.1.14, 4.2.9, and 4.3.3.

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>= 4.0.0, < 4.0.23Affected

References

GitHubgithub.com/rabbitmq/rabbitmq-server/commit/20203c50ea6ff459d462b2d4355326d3a870682cGitHubgithub.com/rabbitmq/rabbitmq-server/commit/60de2fbbcd812ab294985cef260cc2f1b1a02a5bGitHubgithub.com/rabbitmq/rabbitmq-server/commit/9e36b7f4c1e2eed77300288dca3e01bd9b23c432GitHubgithub.com/rabbitmq/rabbitmq-server/commit/f4d9da668b7304dfb9aeb2b4e9ff766a1275d021GitHubgithub.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9GitHubgithub.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3GitHubgithub.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-chxf-3hfg-j8f7GitHubgithub.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-chxf-3hfg-j8f7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-67413?

CVE-2026-67413 is a medium-severity vulnerability affecting broadcom rabbitmq_server. It was published on September 25, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-67413?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-67413?

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-2026-67413?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-67413 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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