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CVE-2026-67412

Broadcom Rabbitmq Server broken access control

7.1 HIGHPublic exploitEPSS 0.26%
  1. Published25 Sept 2026

Description

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 4.3.3, 4.2.9 , 4.1.14, 4.0.24, and 3.13.18, Federation upstream in RabbitMQ skips vhost authorization allowing cross-vhost message access. what the bug lets you do. A policymaker on one vhost reads and drains messages out of another vhost it has no permission on. With the default ack-mode the source messages are consumed (deleted), not copied. Why that should not 1. Federation validates the upstream URI without any vhost-access Cross-vhost message read/drain from a per-vhost policymaker, breaking vhost tenancy This issue is fixed in versions 4.3.3, 4.2.9 , 4.1.14, 4.0.24, and 3.13.18.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Affected products

Broadcom Rabbitmq Server≥ 3.13.0 < 3.13.18 · ≥ 4.0.0 < 4.0.24 · ≥ 4.1.0 < 4.1.14 · ≥ 4.2.0 < 4.2.9

Remediation

Fixed in
Broadcom Rabbitmq Server≥ 3.13.18

References

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Frequently asked

Is CVE-2026-67412 being actively exploited?

CVE-2026-67412 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.26%.

How severe is CVE-2026-67412?

CVE-2026-67412 has a CVSS 3.1 base score of 7.1, rated high. EPSS estimates a 0.26% probability of exploitation.

Which products are affected by CVE-2026-67412?

Affected products include Broadcom Rabbitmq Server.

How do I fix CVE-2026-67412?

Upgrade affected software to a fixed version, for example Broadcom Rabbitmq Server 3.13.18 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-67412 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.