CVE-2026-18447

{
  "etk_id": "ETK-2026-4287",
  "cve_id": "CVE-2026-18447",
  "display_id": "CVE-2026-18447",
  "ghsa_id": "GHSA-76fw-fh4f-3w66",
  "euvd_id": "EUVD-2026-124432",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Type confusion in PostgreSQL SQL-language functions",
  "summary": "PostgreSQL versions before 18.7, 17.12, 16.16, 15.20, and 14.25 are affected by type confusion in SQL-language functions. A user permitted to create a relevant database object may be able to execute operating-system commands as the account running the database service.",
  "mitigation": "Upgrade PostgreSQL to 18.7, 17.12, 16.16, 15.20, or 14.25, as appropriate for the supported major version. Until upgraded, restrict object-creation privileges to trusted roles.",
  "vendor": null,
  "product": "PostgreSQL",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 18, < 18.7",
        ">= 17, < 17.12",
        ">= 16, < 16.16",
        ">= 15, < 15.20",
        ">= 0, < 14.25"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "18.7",
        "17.12",
        "16.16",
        "15.20",
        "14.25"
      ],
      "package_name": "PostgreSQL",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 19.62219725,
  "t0_at": "2026-11-12T14:15:31.850000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-12T14:15:31.850000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-12T14:15:31.850000+00:00",
      "url": "https://github.com/advisories/GHSA-76fw-fh4f-3w66"
    }
  }
}