CVE-2026-103936

{
  "etk_id": "ETK-2026-1710",
  "cve_id": "CVE-2026-103936",
  "display_id": "CVE-2026-103936",
  "ghsa_id": "GHSA-x3m2-6mg8-vj7f",
  "euvd_id": "EUVD-2026-102224",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated STUN denial of service in libp2p WebRTC",
  "summary": "Node.js deployments using the libp2p WebRTCDirect listener are affected. A remote party that can send UDP traffic to that listener can cause the process to stop before peer authentication occurs.",
  "mitigation": "Upgrade js-libp2p to 3.3.7 and webrtc to 6.0.28 or later. Until updates are deployed, restrict UDP access to WebRTCDirect listeners to trusted networks.",
  "vendor": "libp2p",
  "product": "js-libp2p",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 6.0.28"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "6.0.28"
      ],
      "package_name": "@libp2p/webrtc",
      "purl": "pkg:npm/@libp2p/webrtc"
    }
  ],
  "cwes": [
    248
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": 0.0052,
  "epss_percentile": 0.4314,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 30.126852483333334,
  "t0_at": "2026-10-15T17:28:32.567000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-08-18T23:43:53+00:00",
      "days": -57.739346840277776,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T17:28:32.567000+00:00",
      "url": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x3m2-6mg8-vj7f"
    },
    "trigger_signal": {
      "at": "2026-10-15T17:28:32.567000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T17:28:32.567000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103936"
    }
  }
}