RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status

Summary

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.

Timeline

1. Sep 25, 2026, 4:34 PM UTCCVE published
2. Sep 25, 2026, 5:00 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Sep 25, 2026, 5:00 PM UTCRecord last updated

Affected versions

• rabbitmq rabbitmq-server

  From 4.3.0 · fixed in 4.3.3; From 4.2.0 · fixed in 4.2.9; From 4.1.0 · fixed in 4.1.14; From 4.0.0 · fixed in 4.0.23

• rabbitmqBitnami

  From 4.0.0 · fixed in 4.0.23; From 4.1.0 · fixed in 4.1.14; From 4.2.0 · fixed in 4.2.9; From 4.3.0 · fixed in 4.3.3

References 3