CVE-2026-102984

{
  "etk_id": "ETK-2026-121",
  "cve_id": "CVE-2026-102984",
  "display_id": "CVE-2026-102984",
  "ghsa_id": "GHSA-qh8j-hqjv-7m4x",
  "euvd_id": "EUVD-2026-89970",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Malformed Host header denial of service in @astrojs/node",
  "summary": "@astrojs/node versions through 11.1.2 can mishandle malformed Host headers while constructing incoming request URLs. An attacker able to send such a header to the origin can cause failed requests and, when staticHeaders is enabled, terminate the Node process.",
  "mitigation": "Upgrade @astrojs/node to version 11.1.3 or later. Until upgraded, reject malformed Host headers at a reverse proxy or CDN before they reach the application.",
  "vendor": "withastro",
  "product": "astro",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 11.1.2"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "11.1.3"
      ],
      "package_name": "@astrojs/node",
      "purl": "pkg:npm/@astrojs/node"
    }
  ],
  "cwes": [
    248
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0036,
  "epss_percentile": 0.2864,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "mechanism_verified",
  "exploit": false,
  "pipeline_minutes": 40.030167,
  "t0_at": "2026-09-30T14:35:22.323000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-01T02:15:12.799647+00:00",
      "days": 0.48600088711805556,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T14:35:22.323000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-09-30T14:35:22.323000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T14:35:22.323000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-102984"
    }
  }
}