{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57216","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-24T02:21:33.810Z","datePublished":"2026-07-10T20:20:33.269Z","dateUpdated":"2026-07-13T14:01:23.697Z"},"containers":{"cna":{"title":"RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw"},{"name":"https://github.com/rabbitmq/rabbitmq-server/pull/15936","tags":["x_refsource_MISC"],"url":"https://github.com/rabbitmq/rabbitmq-server/pull/15936"},{"name":"https://github.com/rabbitmq/rabbitmq-server/pull/15940","tags":["x_refsource_MISC"],"url":"https://github.com/rabbitmq/rabbitmq-server/pull/15940"},{"name":"https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47","tags":["x_refsource_MISC"],"url":"https://github.com/rabbitmq/rabbitmq-server/commit/7273c9eb6920abcde17b892dbe97ccaf906ead47"},{"name":"https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112","tags":["x_refsource_MISC"],"url":"https://github.com/rabbitmq/rabbitmq-server/commit/9f8c39fcf0acbc43080ee7017a62a02832114112"},{"name":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6","tags":["x_refsource_MISC"],"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6"}],"affected":[{"vendor":"rabbitmq","product":"rabbitmq-server","versions":[{"version":">= 4.2.0, < 4.2.6","status":"affected"},{"version":">= 4.1.0, < 4.1.11","status":"affected"},{"version":">= 4.0.0, < 4.0.21","status":"affected"},{"version":">= 3.13.0, < 3.13.15","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T20:20:33.269Z"},"descriptions":[{"lang":"en","value":"RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is accepted through a trusted PROXY-protocol path and the backend listener is loopback-bound because the loopback check uses the listener-side socket address instead of the real client source. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6."}],"source":{"advisory":"GHSA-36m6-588r-vqcw","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-36m6-588r-vqcw","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-13T14:00:50.887777Z","id":"CVE-2026-57216","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-13T14:01:23.697Z"}}]}}