CVE-2026-91184

{
  "etk_id": "ETK-2026-1625",
  "cve_id": "CVE-2026-91184",
  "display_id": "CVE-2026-91184",
  "ghsa_id": "GHSA-8rxj-rxx8-xj47",
  "euvd_id": "EUVD-2026-101116",
  "status": "published",
  "anchor_state": "anchored",
  "title": "NGINX Gateway Fabric AuthenticationFilter configuration injection",
  "summary": "NGINX Gateway Fabric can incorporate unvalidated AuthenticationFilter realm values into generated NGINX configuration. An authenticated tenant that can configure these filters on routes using a shared Gateway may alter gateway behavior and affect other tenants' resources or routing.",
  "mitigation": "Restrict RBAC so untrusted namespaces cannot create or modify AuthenticationFilter resources attached to shared Gateways. Isolate tenants onto separate Gateways where this permission cannot be removed.",
  "vendor": "f5",
  "product": "NGINX Gateway Fabric",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.4.0, < 2.8.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2.8.0"
      ],
      "package_name": "NGINX Gateway Fabric",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0048,
  "epss_percentile": 0.4025,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 11.584453033333332,
  "t0_at": "2026-10-14T14:40:27.849000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T14:40:27.849000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T14:40:27.849000+00:00",
      "url": "https://github.com/advisories/GHSA-8rxj-rxx8-xj47"
    }
  }
}