{"schema":"threatline.record/2","record":{"id":"CVE-2026-66072","aliases":["GHSA-48hm-chgv-398r"],"summary":"RabbitMQ: Atom table exhaustion via stream `chunk_selector`","details":"RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, get_chunk_selector/1 calls binary_to_atom on the raw client-supplied <<\"chunk_selector\">> property from post-auth subscribe and resolve_offset_spec frames, with no whitelist and no existing guard. An authenticated stream client with read access to any stream can crash the broker node. Preconditions include rabbitmq_stream plugin enabled Authenticated stream-protocol user with read access to at least one stream. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1.","categories":["Unclassified"],"product":"rabbitmq-server","vendor":"rabbitmq","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-66072","source_modified_at":"2026-09-24T14:27:29.171Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"rabbitmq-server","vendor":"rabbitmq","versions":[{"version":">= 3.13.0, < 3.13.15","status":"affected"},{"version":">= 4.0.0, < 4.0.20","status":"affected"},{"version":">= 4.1.0, < 4.1.11","status":"affected"},{"version":">= 4.2.0, < 4.2.6","status":"affected"},{"version":">= 4.3.0, < 4.3.1","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":6,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00384,"percentile":0.31304,"score_date":"2026-10-23"},"published_at":"2026-09-23T20:13:13.215Z","modified_at":"2026-09-24T14:27:29.171Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-66072","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-24T14:27:29.171Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-66072","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-48hm-chgv-398r","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.1","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-24T14:27:03.236517Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-24T14:27:29.171Z","content_hash":"b3fbd497f025acca4c3a45bf560c1aea5feadc05e8f3ecc372e6919d70435d5b"}}