{"id":"CVE-2026-67408","summary":"RabbitMQ: Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service","details":"RabbitMQ is a messaging and streaming broker. From 4.1.0 until 4.3.3, 4.2.9, and 4.1.11, Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service. rabbitMQ 4.3.1 with rabbitmqstreammanagement enabled accepts PUT /api/stream/super-streams/{vhost}/{name} requests from an authenticated management user that can access the target vhost. When the request body contains the binding-keys field, the handler parses the attacker-controlled comma-separated string and builds the full stream-name list before checking whether the user has permission to configure the resulting streams. A low-privileged management user with vhost access but no configure, write, or read permission can therefore force large transient allocations before the resource permission check. In a 768 MB memory-limited container, one HTTP PUT with about 4.5 MB of JSON body killed the RabbitMQ container with Docker state exited true An authenticated low-privileged management user can kill a memory-limited RabbitMQ node with one HTTP This issue is fixed in versions 4.3.3, 4.2.9, and 4.1.11.","aliases":["GHSA-2hm4-4438-49q8"],"modified":"2026-09-27T03:47:36.801941503Z","published":"2026-09-25T16:35:22.829Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67408.json","unresolved_ranges":[{"extracted_events":[{"introduced":"4.1.0"},{"fixed":"4.1.11"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9"},{"type":"WEB","url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67408.json"},{"type":"ADVISORY","url":"https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-2hm4-4438-49q8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67408"},{"type":"FIX","url":"https://github.com/rabbitmq/rabbitmq-server/commit/0f3defd176e027f54f447beee168d906d4f109b6"},{"type":"FIX","url":"https://github.com/rabbitmq/rabbitmq-server/commit/eb11bc44005fd6d327a78bf171bc598207778c9b"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rabbitmq/rabbitmq-server","events":[{"introduced":"1929eeadf9b2bac12c5434fb56884ef27370580e"},{"introduced":"95c501fbad76c66156346cf364d158d6e30aa4d9"},{"fixed":"1d284b2d2a1e2f845ad22b0d5ee38ec372d50802"},{"fixed":"47d6d6457c7d1a440daed643cb7d76bba313e79c"},{"fixed":"0f3defd176e027f54f447beee168d906d4f109b6"},{"fixed":"eb11bc44005fd6d327a78bf171bc598207778c9b"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"4.3.0"},{"fixed":"4.3.3"},{"introduced":"4.2.0"},{"fixed":"4.2.9"}]}}],"versions":["v4.2.8","v4.3.2","v4.2.7","v4.3.1","v4.2.6","v4.3.0","v4.2.5","v4.2.4","v4.2.3","v4.2.2","v4.2.1","v4.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67408.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}