{
  "cve": "CVE-2026-66076",
  "enrichment": {
    "affected": [
      {
        "configurations": [
          {
            "platform": null,
            "status": "affected",
            "versions": {
              "scheme": "semver",
              "value": "[3.13.0,3.13.15)"
            }
          },
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            "platform": null,
            "status": "affected",
            "versions": {
              "scheme": "semver",
              "value": "[4.0.0,4.0.20)"
            }
          },
          {
            "platform": null,
            "status": "affected",
            "versions": {
              "scheme": "semver",
              "value": "[4.1.0,4.1.11)"
            }
          },
          {
            "platform": null,
            "status": "affected",
            "versions": {
              "scheme": "semver",
              "value": "[4.2.0,4.2.6)"
            }
          }
        ],
        "enrichment": {
          "confidence": 100.0,
          "confidence_source": "matching",
          "scores": [
            {
              "score": 100.0,
              "source": "matching"
            }
          ]
        },
        "original": {
          "product": "rabbitmq-server",
          "source": "cna",
          "vendor": "rabbitmq"
        },
        "product": "rabbitmq-server",
        "vendor": "rabbitmq"
      }
    ],
    "created": "2026-09-23T21:30:07.279995+00:00",
    "updated": "2026-09-23T22:00:14.681016+00:00",
    "vendors": [
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      "rabbitmq$PRODUCT$rabbitmq-server"
    ]
  },
  "mitre": {
    "cpes": [],
    "created": "2026-09-23T19:57:11.906000+00:00",
    "description": "RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, is_authorized/2 calls rabbit_mgmt_util:is_authorized/2, which checks only the management tag, instead of is_authorized_vhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost from the path without checking that the user can access it. Any management-tagged user can therefore read Raft status, including leader, members, term, and commit index, for quorum queues in inaccessible vhosts, exposing cross-tenant queue names and cluster topology. The management plugin must be enabled and the attacker must have a management tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {},
      "cvssV4_0": {
        "score": 2.3,
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
      }
    },
    "mitre_repo_path": "cves/2026/66xxx/CVE-2026-66076.json",
    "references": [
      "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6",
      "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-j45q-v7g2-82ph"
    ],
    "title": "RabbitMQ: Cross-vhost quorum-queue status and stream tracking disclosure",
    "updated": "2026-09-23T19:57:11.906000+00:00",
    "vendors": [],
    "weaknesses": [
      "CWE-862"
    ]
  },
  "nvd": {
    "cpes": [],
    "created": "2026-09-23T20:17:13.007000+00:00",
    "description": "RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, is_authorized/2 calls rabbit_mgmt_util:is_authorized/2, which checks only the management tag, instead of is_authorized_vhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost from the path without checking that the user can access it. Any management-tagged user can therefore read Raft status, including leader, members, term, and commit index, for quorum queues in inaccessible vhosts, exposing cross-tenant queue names and cluster topology. The management plugin must be enabled and the attacker must have a management tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {},
      "cvssV4_0": {
        "score": 2.3,
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
      }
    },
    "nvd_repo_path": "2026/CVE-2026-66076.json",
    "references": [
      "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6",
      "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-j45q-v7g2-82ph"
    ],
    "title": null,
    "updated": "2026-09-23T20:17:13.007000+00:00",
    "vendors": [],
    "weaknesses": [
      "CWE-862"
    ]
  },
  "opencve": {
    "changes": [
      {
        "created": "2026-09-23T20:15:00+00:00",
        "data": [
          {
            "details": {
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              "old": null
            },
            "type": "description"
          },
          {
            "details": {
              "new": "RabbitMQ: Cross-vhost quorum-queue status and stream tracking disclosure",
              "old": null
            },
            "type": "title"
          },
          {
            "details": {
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              ],
              "removed": []
            },
            "type": "weaknesses"
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          {
            "details": {
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              "removed": []
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            "type": "references"
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            "details": {
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                }
              },
              "removed": {},
              "updated": {}
            },
            "type": "metrics"
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        ],
        "id": "09faf434-110e-49bf-a8cb-0d9486203439"
      },
      {
        "created": "2026-09-23T22:15:00+00:00",
        "data": [
          {
            "details": [
              "rabbitmq",
              "rabbitmq$PRODUCT$rabbitmq-server"
            ],
            "type": "first_time"
          },
          {
            "details": {
              "added": [
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                "rabbitmq$PRODUCT$rabbitmq-server"
              ],
              "removed": []
            },
            "type": "vendors"
          }
        ],
        "id": "6c1601b2-02ae-4fc7-a38b-b516d6ccb311"
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    "cpes": {
      "data": [],
      "providers": []
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    "created": {
      "data": "2026-09-23T19:57:11.906000+00:00",
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    },
    "description": {
      "data": "RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, is_authorized/2 calls rabbit_mgmt_util:is_authorized/2, which checks only the management tag, instead of is_authorized_vhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost from the path without checking that the user can access it. Any management-tagged user can therefore read Raft status, including leader, members, term, and commit index, for quorum queues in inaccessible vhosts, exposing cross-tenant queue names and cluster topology. The management plugin must be enabled and the attacker must have a management tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.",
      "provider": "mitre"
    },
    "metrics": {
      "cvssV2_0": {
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        "provider": null
      },
      "cvssV3_0": {
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      },
      "cvssV3_1": {
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      "cvssV4_0": {
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        },
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      "epss": {
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      },
      "ssvc": {
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      "threat_severity": {
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    "references": {
      "data": [
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      "providers": [
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      "provider": "mitre"
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    "updated": {
      "data": "2026-09-23T22:00:14.681016+00:00",
      "provider": "enrichment"
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    "vendors": {
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  }
}