ETK-2026-356Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-356",
  "cve_id": null,
  "display_id": "ETK-2026-356",
  "ghsa_id": "GHSA-wr5q-7wxw-x568",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Trusted-IP authentication bypass in OAuth2 Proxy",
  "summary": "OAuth2 Proxy before v7.15.5 can incorrectly use spoofed client-IP headers when trusted-IP exemptions and reverse-proxy mode are enabled. An unauthenticated remote attacker may gain the access granted to an exempt IP address if they can supply or preserve a client-IP header.",
  "mitigation": "Upgrade unnamed to > v7.15.4 or later.",
  "vendor": null,
  "product": "OAuth2 Proxy",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.1.0, <= 7.15.3"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "> v7.15.4"
      ],
      "package_name": null,
      "purl": null
    }
  ],
  "cwes": [
    290
  ],
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 9.6550065,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-01T09:23:44+00:00",
      "days": -19.810414471435184,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T04:50:43.834061+00:00",
      "url": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-wr5q-7wxw-x568"
    }
  }
}