RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00278.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
rabbitmq rabbitmq-server affected
Version Status Constraints
>= 4.3.0, < 4.3.3 affected —
>= 4.2.0, < 4.2.9 affected —
>= 4.1.0, < 4.1.14 affected —
>= 4.0.0, < 4.0.23 affected —

No data.

No data.

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Vendors Products
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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9 cve-icon cve-icon cve-icon
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3 cve-icon cve-icon cve-icon
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-q44f-9vc5-grh7 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-67406 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-67406 cve-icon
History

Wed, 30 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-209
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

threat_severity

Moderate

Sat, 26 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sat, 26 Sep 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Rabbitmq
Rabbitmq rabbitmq-server
Vendors & Products Rabbitmq
Rabbitmq rabbitmq-server

Fri, 25 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.
Title RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status
Weaknesses CWE-200
References
Metrics cvssV4_0

{'score': 4.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-25T17:00:54.175Z

Reserved: 2026-07-29T15:02:20.411Z

Link: CVE-2026-67406

cve-icon Vulnrichment

Updated: 2026-09-25T17:00:50.445Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-25T17:17:12.477

Modified: 2026-09-28T14:38:38.163

Link: CVE-2026-67406

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-25T16:34:06Z

Links: CVE-2026-67406 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T10:00:17Z

Weaknesses