CVE-2026-67222 | BDVDB-2026-379124 Detail

Description#

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, mechanisms/1 applied list_to_atom/1 to every colon-delimited token in an attacker-controlled auth_mechanism value, permanently consuming Erlang VM atoms and allowing the node to be crashed with a large request. Exploitation requires the Shovel or Federation plugin to be in use, and setting auth_mechanism requires the policymaker tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

Impact#

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Exploit#

History#

1. Version 12026-09-25Record published in the CVE List.
2. Version 22026-09-28Most recent update recorded in the CVE List.