{
  "cveId": "CVE-2026-67229",
  "url": "https://patchblox.com/security/cve/CVE-2026-67229",
  "summary": "CVE-2026-67229 is fixed in rabbitmq-server on 1 platform by DEBIAN-CVE-2026-67229 (version 4.3.0-2), released September 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "RabbitMQ: Admin-only atom exhaustion: atomize_keys on vhost metadata",
  "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, add_vhost/2 calls rabbit_data_coercion:atomize_keys/1 (the unsafe variant using binary_to_atom) on the vhost metadata map. The 20 MB management body limit fits ~1M\u002B short keys. Admin-only. An administrator importing a crafted definitions file can crash the node in a single request: a vhosts entry with ~1M unique metadata keys exhausts the atom table during import. Preconditions include administrator tag. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.",
  "published": "2026-09-23T21:17:00Z",
  "severity": "Moderate",
  "cvss": 4.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Uncontrolled Resource Consumption",
  "epss": 0.00389,
  "epssPercentile": 0.33288,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67229",
  "fixes": [
    {
      "platform": "linux",
      "product": "rabbitmq-server",
      "release": "Debian 14",
      "fixedVersion": "4.3.0-2",
      "fix": "DEBIAN-CVE-2026-67229",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-67229",
      "released": "2026-09-25T19:41:43Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}