CVE-2026-105209

{
  "etk_id": "ETK-2026-562",
  "cve_id": "CVE-2026-105209",
  "display_id": "CVE-2026-105209",
  "ghsa_id": "GHSA-hcch-574x-xrm8",
  "euvd_id": "EUVD-2026-92102",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Cross-organization enrollment authorization flaw in ZITADEL",
  "summary": "ZITADEL versions 3.x before 3.4.15 and 4.x before 4.17.1 can authorize passkey or passwordless enrollment for users in another organization on the same instance. An attacker with user-write permission in one organization could add an authenticator to a user account in another organization and take control of that account.",
  "mitigation": "Upgrade ZITADEL 3.x to 3.4.15 or later, or ZITADEL 4.x to 4.17.1 or later. Restrict user-write permissions to trusted administrators until all instances are updated.",
  "vendor": "zitadel",
  "product": "zitadel",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 4.17.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4.17.1"
      ],
      "package_name": "zitadel",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 3.4.15"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.4.15"
      ],
      "package_name": "zitadel",
      "purl": null
    }
  ],
  "cwes": [
    862
  ],
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
  "epss_score": 0.0022,
  "epss_percentile": 0.1183,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 37.469553983333334,
  "t0_at": "2026-10-04T13:10:03.314000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-04T13:10:03.314000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-04T13:10:03.314000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-105209"
    }
  }
}