{
  "cveId": "CVE-2026-27953",
  "url": "https://patchblox.com/security/cve/CVE-2026-27953",
  "summary": "CVE-2026-27953 is fixed in ormar on 1 platform by DEBIAN-CVE-2026-27953 (version 0.23.1-1), released March 19, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "ormar: ormar is a async mini ORM for Python",
  "description": "ormar is a async mini ORM for Python. Versions 0.23.0 and below are vulnerable to Pydantic validation bypass through the model constructor, allowing any unauthenticated user to skip all field validation by injecting \u0022__pk_only__\u0022: true into a JSON request body. By injecting \u0022__pk_only__\u0022: true into a JSON request body, an unauthenticated attacker can skip all field validation and persist unvalidated data directly to the database. A secondary __excluded__ parameter injection uses the same pattern to selectively nullify arbitrary model fields (e.g., email or role) during construction. This affects ormar\u0027s canonical FastAPI integration pattern recommended in its official documentation, enabling privilege escalation, data integrity violations, and business logic bypass in any application using ormar.Model directly as a request body parameter. This issue has been fixed in version 0.23.1.",
  "published": "2026-03-19T21:17:09Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.01238,
  "epssPercentile": 0.6929,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "ormar",
      "release": "Debian 14",
      "fixedVersion": "0.23.1-1",
      "fix": "DEBIAN-CVE-2026-27953",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-27953",
      "released": "2026-03-19T21:17:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}