{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-67414",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-29T15:02:20.412Z",
        "datePublished": "2026-10-14T16:04:07.449Z",
        "dateUpdated": "2026-10-14T16:04:07.449Z"
    },
    "containers": {
        "cna": {
            "title": "RabbitMQ AMQP 1.0 parser: amplification memory-exhaustion DoS via zero-width array aggregation",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-400",
                            "lang": "en",
                            "description": "CWE-400: Uncontrolled Resource Consumption",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-770",
                            "lang": "en",
                            "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-w6mq-4qpx-v7mh",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-w6mq-4qpx-v7mh"
                },
                {
                    "name": "https://github.com/rabbitmq/rabbitmq-server/commit/3f0f67dfb7c4390e3cbfa25ab3ee19dcb0845bd4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/rabbitmq/rabbitmq-server/commit/3f0f67dfb7c4390e3cbfa25ab3ee19dcb0845bd4"
                },
                {
                    "name": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.4"
                }
            ],
            "affected": [
                {
                    "vendor": "rabbitmq",
                    "product": "rabbitmq-server",
                    "versions": [
                        {
                            "version": ">= 4.0.0, < 4.0.24",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.1.0, < 4.1.15",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.2.0, < 4.2.10",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.3.0, < 4.3.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-14T16:04:07.449Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.24, 4.1.15, 4.2.10, and 4.3.4, deps/amqp10_common/src/amqp10_binary_parser.erl materializes each element of AMQP 1.0 arrays whose shared constructor has zero width, while limiting only the number of elements in each array and not the aggregate arrays in a frame. After completing SASL authentication, a low-privilege client can send an ordinary frame containing many individually permitted arrays, causing a small frame to expand into a very large reader-process heap before later frame validation or authorization. Because deps/rabbit/src/rabbit_amqp_reader.erl clears the pre-authentication max_heap_size guard after login, repeated or concurrent frames can trigger the node-wide memory alarm, block publishers, or exhaust broker memory. This issue is fixed in versions 4.0.24, 4.1.15, 4.2.10, and 4.3.4."
                }
            ],
            "source": {
                "advisory": "GHSA-w6mq-4qpx-v7mh",
                "discovery": "UNKNOWN"
            }
        }
    }
}