All vulnerabilities
CVE-2026-67406GHSA-q44f-9vc5-grh7

rabbitmq-server: RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback โ€” Plaintext Credentials Exposed in Crash Dumps and sys:get_status

rabbitmq rabbitmq-server
CVSS
4.6Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 20% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published25 Sep 2026Updated 25 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 4

  • rabbitmq-serveraffected: >= 4.3.0, < 4.3.3CVE List
  • rabbitmq-serveraffected: >= 4.2.0, < 4.2.9CVE List
  • rabbitmq-serveraffected: >= 4.1.0, < 4.1.14CVE List
  • rabbitmq-serveraffected: >= 4.0.0, < 4.0.23CVE List

References 3