CVE-2026-102600

{
  "etk_id": "ETK-2026-32",
  "cve_id": "CVE-2026-102600",
  "display_id": "CVE-2026-102600",
  "ghsa_id": "GHSA-wfpm-5gcm-94cg",
  "euvd_id": "EUVD-2026-88981",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Prototype-chain client lookup in @socket.io/cluster-engine",
  "summary": "@socket.io/cluster-engine 0.1.0 is affected in clustered deployments when it handles attacker-controlled session identifiers. A remote attacker may cause the Node.js process to crash, resulting in denial of service; applications that do not use this package are not affected by this issue.",
  "mitigation": "Upgrade @socket.io/cluster-engine to version 0.1.1. Until then, reject suspicious session identifiers before they reach the cluster engine and limit session-related requests to trusted infrastructure.",
  "vendor": "npm",
  "product": "npm:@socket.io/cluster-engine",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<0.1.1"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "0.1.1"
      ],
      "package_name": "@socket.io/cluster-engine",
      "purl": "pkg:npm/@socket.io/cluster-engine"
    }
  ],
  "cwes": [
    20
  ],
  "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": 0.0037,
  "epss_percentile": 0.2904,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 16.39658385,
  "t0_at": "2026-09-29T15:23:15.857000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-29T15:23:15.857000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T15:23:15.857000+00:00",
      "url": "https://github.com/socketio/socket.io/security/advisories/GHSA-wfpm-5gcm-94cg"
    }
  }
}