CVE-2026-93994

{
  "etk_id": "ETK-2026-106",
  "cve_id": "CVE-2026-93994",
  "display_id": "CVE-2026-93994",
  "ghsa_id": "GHSA-qc4p-9828-mv83",
  "euvd_id": "EUVD-2026-89758",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Public-key multi-factor authentication bypass in Apache MINA SSHD",
  "summary": "Affected sshd-core releases do not distinguish repeated keys during multi-key SSH authentication. An attacker with one authorized key may satisfy a policy intended to require two separate keys when that policy is enabled on the server.",
  "mitigation": "Upgrade org.apache.sshd:sshd-core to 2.20.0 or 3.0.0-M6, as appropriate for the release line. Until upgraded, do not rely on repeated public-key factors as independent authentication controls.",
  "vendor": "Apache Software Foundation",
  "product": "Apache MINA SSHD",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 2.20.0",
        ">= 3.0.0-M1, < 3.0.0-M6"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2.20.0",
        "3.0.0-M6"
      ],
      "package_name": "org.apache.sshd:sshd-core",
      "purl": null
    }
  ],
  "cwes": [
    304
  ],
  "cvss_score": 8.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": 0.0032,
  "epss_percentile": 0.2297,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 34.33491231666667,
  "t0_at": "2026-09-30T09:45:32.561000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-30T09:45:32.561000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T09:45:32.561000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-93994"
    }
  }
}