{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-67235",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-28T19:50:39.438Z",
        "datePublished": "2026-09-23T20:36:37.508Z",
        "dateUpdated": "2026-09-23T20:36:37.508Z"
    },
    "containers": {
        "cna": {
            "title": "RabbitMQ: AMQP 0-9-1 body assembly never validates accumulated size",
            "problemTypes": [
                {
                    "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": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 7.1,
                        "baseSeverity": "HIGH",
                        "vectorString": "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",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-q8g2-pc7m-m3jw",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-q8g2-pc7m-m3jw"
                },
                {
                    "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"
                },
                {
                    "name": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.0"
                }
            ],
            "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, < 4.0.20",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.13.0, < 3.13.15",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-23T20:36:37.508Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "RabbitMQ is a messaging and streaming broker. Prior to versions 4.3.0, 4.2.6, 4.1.11, 4.0.20, and 3.13.15, The content-header BodySize (a uint64) was stored without validation against max_message_size. The size check ran only when assembly completed. By declaring body_size = 2^63-1 and then streaming fragments, a client ensured that check_msg_size never fired, so the accumulated body size went unbounded. A reader process accumulates memory until the memory alarm fires, degrading all publishers cluster-wide, or until the node runs out of memory. The memory alarm provides only partial mitigation, since it is reactive rather than preventive. AMQP 0-9-1 is the most widely used protocol, and any publisher can trigger this condition. Preconditions include Any authenticated AMQP 0-9-1 client with publish permission can exploit this.. This issue is fixed in versions 4.3.0, 4.2.6, 4.1.11, 4.0.20, and 3.13.15."
                }
            ],
            "source": {
                "advisory": "GHSA-q8g2-pc7m-m3jw",
                "discovery": "UNKNOWN"
            }
        }
    }
}