CVE-2026-15176

{
  "etk_id": "ETK-2026-1618",
  "cve_id": "CVE-2026-15176",
  "display_id": "CVE-2026-15176",
  "ghsa_id": "GHSA-cvv4-j4mx-w8q5",
  "euvd_id": "EUVD-2026-101112",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap buffer overflow in NGINX Plus and Open Source",
  "summary": "NGINX Plus and NGINX Open Source can overflow worker-process heap memory while handling HTTP requests. An unauthenticated remote client may disrupt worker processes and could potentially execute code where ASLR is disabled or bypassed; affected deployments require the specified alias, rewrite, $request_filename, or logging configuration.",
  "mitigation": "Upgrade NGINX Plus to 37.1.0.1 or 37.0.5.1, as appropriate for the supported release branch, and upgrade NGINX Open Source to 1.31.7 or 1.30.6. Until upgraded, remove or revise affected $request_filename uses in alias/rewrite locations and access-log formats where feasible.",
  "vendor": "F5",
  "product": "NGINX Plus",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 37.1.0, < 37.1.0.1",
        ">= 37.0.0, < 37.0.5.1",
        ">= R36, < *",
        ">= R35, < *",
        ">= R34, < *",
        ">= R33, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "37.1.0.1",
        "37.0.5.1",
        "*"
      ],
      "package_name": "NGINX Plus",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.31.0, < 1.31.7",
        ">= 0.1.29, < 1.30.6"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.31.7",
        "1.30.6"
      ],
      "package_name": "NGINX Open Source",
      "purl": null
    }
  ],
  "cwes": [
    122
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0052,
  "epss_percentile": 0.4303,
  "epss_asof": "2026-10-21",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 22.334451683333334,
  "t0_at": "2026-10-14T14:40:26.374000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T14:40:26.374000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T14:40:26.374000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-15176"
    }
  }
}