CVE-2026-118666

{
  "etk_id": "ETK-2026-2916",
  "cve_id": "CVE-2026-118666",
  "display_id": "CVE-2026-118666",
  "ghsa_id": "GHSA-mp66-8ww2-pcwm",
  "euvd_id": "EUVD-2026-112473",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Cross-tenant data leak in @graphql-tools legacy WebSocket executor",
  "summary": "@graphql-tools/executor-legacy-ws through version 1.1.35 can misdirect GraphQL subscription data between callers. A caller may obtain another user's subscription results and interrupt that user's stream when an application shares one executor across overlapping subscriptions from untrusted users.",
  "mitigation": "Upgrade @graphql-tools/executor-legacy-ws to >= 1.1.36 or later.",
  "vendor": "npm",
  "product": "npm:@graphql-tools/executor-legacy-ws",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.1.35"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        ">= 1.1.36"
      ],
      "package_name": "@graphql-tools/executor-legacy-ws",
      "purl": "pkg:npm/@graphql-tools/executor-legacy-ws"
    }
  ],
  "cwes": [
    200
  ],
  "cvss_score": 6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 23.649852566666667,
  "t0_at": "2026-10-28T20:45:58.056000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-29T00:05:53.530717+00:00",
      "days": 0.13883651292824073,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T20:45:58.056000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-28T20:45:58.056000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T20:45:58.056000+00:00",
      "url": "https://github.com/ardatan/graphql-tools/security/advisories/GHSA-mp66-8ww2-pcwm"
    }
  }
}