{"id":"AZL-105804","summary":"CVE-2026-67229 affecting package rabbitmq-server 3.13.7-9","details":"RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, add_vhost/2 calls rabbit_data_coercion:atomize_keys/1 (the unsafe variant using binary_to_atom) on the vhost metadata map. The 20 MB management body limit fits ~1M+ short keys. Admin-only. An administrator importing a crafted definitions file can crash the node in a single request: a vhosts entry with ~1M unique metadata keys exhausts the atom table during import. Preconditions include administrator tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.","modified":"2026-10-05T05:34:30Z","published":"2026-09-23T21:17:00Z","upstream":["CVE-2026-67229"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67229"}],"affected":[{"package":{"name":"rabbitmq-server","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/rabbitmq-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.13.7-9"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-105804.json"}}],"schema_version":"1.9.0"}