ETK-2026-763Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-763",
  "cve_id": null,
  "display_id": "ETK-2026-763",
  "ghsa_id": "GHSA-8vc2-jrm4-835w",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Pathless CONNECT denial of service in Envoy OAuth2 filter",
  "summary": "Envoy instances using the OAuth2 HTTP filter are affected when they accept CONNECT requests that do not include a path. An unauthenticated client that can reach an affected listener can crash the Envoy process and interrupt proxy availability.",
  "mitigation": "Upgrade Envoy to 1.36.12 1.37.8 1.38.6, 1.39.3 or later.",
  "vendor": "envoy proxy",
  "product": "envoy proxy:Envoy",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.16.0",
        "<1.40.0"
      ],
      "ecosystem": "envoy proxy",
      "fixed_versions": [
        "1.36.12 1.37.8 1.38.6",
        "1.39.3"
      ],
      "package_name": "Envoy",
      "purl": null
    }
  ],
  "cwes": [
    476
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.528378366666665,
  "t0_at": null,
  "signals": {
    "check": {
      "at": "2026-10-06T13:05:21.963048+00:00",
      "days": -14.950312960949073,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T11:53:49.025593+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-06T10:45:59+00:00",
      "days": -15.047106514745371,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T11:53:49.025593+00:00",
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-8vc2-jrm4-835w"
    },
    "trigger_signal": {
      "at": "2026-10-06T10:45:59+00:00",
      "days": -15.047106514745371,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T11:53:49.025593+00:00",
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-8vc2-jrm4-835w"
    }
  }
}