{
  "cveId": "CVE-2026-67412",
  "url": "https://patchblox.com/security/cve/CVE-2026-67412",
  "summary": "CVE-2026-67412 is fixed in rabbitmq-server on 1 platform by DEBIAN-CVE-2026-67412 (version 4.3.6-1), released October 10, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "RabbitMQ: Federation upstream skips vhost authorization allowing cross-vhost message access",
  "description": "RabbitMQ is a messaging and streaming broker. From 3.13.0 until 4.3.3, 4.2.9 , 4.1.14, 4.0.24, and 3.13.18, Federation upstream in RabbitMQ skips vhost authorization allowing cross-vhost message access. what the bug lets you do. A policymaker on one vhost reads and drains messages out of another vhost it has no permission on. With the default ack-mode the source messages are consumed (deleted), not copied. Why that should not 1. Federation validates the upstream URI without any vhost-access Cross-vhost message read/drain from a per-vhost policymaker, breaking vhost tenancy This issue is fixed in versions 4.3.3, 4.2.9 , 4.1.14, 4.0.24, and 3.13.18.",
  "published": "2026-09-25T17:17:13Z",
  "severity": "Moderate",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
  "cwe": "Missing Authorization",
  "epss": 0.00263,
  "epssPercentile": 0.18157,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67412",
  "fixes": [
    {
      "platform": "linux",
      "product": "rabbitmq-server",
      "release": "Debian 14",
      "fixedVersion": "4.3.6-1",
      "fix": "DEBIAN-CVE-2026-67412",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-67412",
      "released": "2026-10-10T22:48:57Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}