Secuno
ENNL
Book demo

CVE-2026-67411

Broadcom Rabbitmq Server broken access control

7.1 HIGHPublic exploitEPSS 0.32%
  1. Published25 Sept 2026

Description

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopback_users, causing the frontend-to-broker address to be treated as loopback. An attacker who can reach the trusted frontend and has valid credentials for a loopback-restricted account can therefore bypass the source-address restriction; the issue does not bypass password authentication. This issue is fixed in versions 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3.

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 < 4.0.23 · ≥ 4.1.0 < 4.1.14 · ≥ 4.2.0 < 4.2.9

Remediation

Fixed in
Broadcom Rabbitmq Server≥ 3.13.18

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1095598.7
EdgeEver Desktop 1.6.26 through 1.112.0 contains a navigation allowlist bypass that…
CVE-2026-773669.9
obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian…
CVE-2026-1039038.8
An incorrect authorization vulnerability in the WinBox authentication flow of MikroTik…
CVE-2026-1087468.8
Vearch 3.5.2 through 3.5.9 contains an incorrect authorization vulnerability in…
CVE-2026-816499.1
The Fundiin cho WooCommerce WordPress plugin through 3.4.0 does not have proper…
CVE-2026-1085508.8
SkillHub before 0.2.22 contains an incorrect authorization vulnerability in…

Frequently asked

Is CVE-2026-67411 being actively exploited?

CVE-2026-67411 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.32%.

How severe is CVE-2026-67411?

CVE-2026-67411 has a CVSS 3.1 base score of 7.1, rated high. EPSS estimates a 0.32% probability of exploitation.

Which products are affected by CVE-2026-67411?

Affected products include Broadcom Rabbitmq Server.

How do I fix CVE-2026-67411?

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-2026-67411 against the real software inventory on every managed device, every day. 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.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

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