CVE-2026-67406 rabbitmq CVE debrief

Who should care

RabbitMQ administrators and users who utilize the Shovel component should assess their exposure and upgrade to patched versions to prevent potential credential exposure. Defenders should verify inventory and upgrade to patched versions to prevent exposure. Shovel component crashes can automatically write plaintext passwords to error logs, requiring verification and potential remediation.

Why it matters

CVE-2026-67406 RabbitMQ Shovel component vulnerability allows unencrypted credentials to be exposed in crash dump files. Defenders should verify exposure, upgrade to patched versions, and monitor error logs for potential credential exposure.

• Credential exposure through crash dump files requires verification and potential remediation.
• Shovel component crashes can automatically write plaintext passwords to error logs.
• Defenders should verify inventory and upgrade to patched versions to prevent exposure.

Technical summary

The Shovel component in RabbitMQ does not format state logged by the crash reporter, potentially leaving unencrypted credentials in crash dump files. This issue is particularly severe for Shovel worker processes, which store deobfuscated plaintext URIs in their genserver state. The OTP SASL error handler writes the full process state, including plaintext AMQP passwords and URIs, to error logs during crashes. The vulnerability is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23. Defenders should prioritize verifying exposure and upgrading to patched versions, focusing on Shovel component usage.

Defensive priority

Defenders should prioritize verifying exposure and upgrading to patched versions, focusing on Shovel component usage.

Recommended defensive actions

• Verify Shovel component usage and upgrade to patched versions (4.3.3, 4.2.9, 4.1.14, or 4.0.23) if necessary.
• Review RabbitMQ server configurations for potential exposure.
• Monitor error logs for potential credential exposure.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, affected versions, and fixed versions. Vendor RabbitMQ has released patches for the issue. The vulnerability is particularly severe for Shovel worker processes, which store deobfuscated plaintext URIs in their genserver state. The issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23. Defenders should verify exposure, review RabbitMQ server configurations, and monitor error logs for potential credential exposure.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.