CVE-2026-123863

{
  "etk_id": "ETK-2026-4200",
  "cve_id": "CVE-2026-123863",
  "display_id": "CVE-2026-123863",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-123682",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Node.js HTTP/2 session teardown denial of service",
  "summary": "Node.js HTTP/2 servers in affected 24.x and 26.x releases can be terminated by an unauthenticated remote client. Exposure requires an HTTP/2 server whose handler sends its response before the request body is complete, a pattern described as common.",
  "mitigation": "Upgrade Node.js 24.x to 24.22.3 or later, or Node.js 26.x to 26.13.1 or later. Until upgraded, reduce exposure by limiting untrusted access to HTTP/2 endpoints.",
  "vendor": "nodejs",
  "product": "node",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 24.0.0, < 24.22.3",
        ">= 25.0.0, < 26.13.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "24.22.3",
        "26.13.1"
      ],
      "package_name": "node",
      "purl": null
    }
  ],
  "cwes": [
    617
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 19.800811366666668,
  "t0_at": "2026-11-11T18:16:12.733000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-11T18:16:12.733000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T18:16:12.733000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-123863"
    }
  }
}