CVE-2026-88920

{
  "etk_id": "ETK-2026-511",
  "cve_id": "CVE-2026-88920",
  "display_id": "CVE-2026-88920",
  "ghsa_id": "GHSA-4c9g-74h5-78r7",
  "euvd_id": "EUVD-2026-89793",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authentication bypass in Apache WSS4J DOM security processing",
  "summary": "Apache WSS4J DOM security processing is affected by an authentication bypass involving unsigned SAML sender-vouches assertions. An unauthenticated remote attacker may cause forged SOAP messages to be treated as authenticated when the affected assertion processing is reachable.",
  "mitigation": "Upgrade org.apache.wss4j:wss4j-ws-security-dom to 4.0.2, 3.0.6, or 2.4.4, selecting the fixed release for the deployed version line.",
  "vendor": "Apache Software Foundation",
  "product": "Apache WSS4J",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0.0, < 4.0.2",
        ">= 3.0.0, < 3.0.6",
        ">= 0, < 2.4.4"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4.0.2",
        "3.0.6",
        "2.4.4"
      ],
      "package_name": "org.apache.wss4j:wss4j-ws-security-dom",
      "purl": null
    }
  ],
  "cwes": [
    287
  ],
  "cvss_score": 9.8,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0057,
  "epss_percentile": 0.4619,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 14.4340802,
  "t0_at": "2026-09-30T11:58:00.040000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-30T11:58:00.040000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T11:58:00.040000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-88920"
    }
  }
}