Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-67406
RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L P H N N N N 4.6 .0029 19.8 —
AFFECTED
Product Versions Fixed
rabbitmq-server >= 4.3.0, < 4.3.3 – —
TIMELINE
Jul 29 Reserved by GitHub_M
Sep 25 Published (CNA: GitHub_M)
Oct 16 EXPLOIT PUBLISHED — CVE-2026-67406 (rabbitmq-server). Public exploit reference 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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 29, 2026 | Reserved | Reserved by GitHub_M |
| September 25, 2026 | Published | Published (CNA: GitHub_M) |
| October 16, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-67406 (rabbitmq-server). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| rabbitmq | rabbitmq-server | — | >= 4.3.0, < 4.3.3 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-67406 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
