ETK-2026-2735Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2735",
  "cve_id": null,
  "display_id": "ETK-2026-2735",
  "ghsa_id": "GHSA-35m9-986f-rhmh",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "OAuth2 client-secret validation bypass in auth-framework",
  "summary": "auth-framework versions 0.5.0-rc1 through 0.5.0-rc65 and 0.6.0-rc41 through 0.6.0-rc45 mishandle confidential-client authentication during OAuth2 authorization-code exchange. An attacker with a valid authorization code and the target client ID may obtain tokens without knowing that client's registered secret.",
  "mitigation": "Upgrade auth-framework to 0.5.0-rc71 or 0.6.0-rc46 or later. Require PKCE for all clients until upgrades are complete to reduce exposure from intercepted authorization codes.",
  "vendor": "rust",
  "product": "rust:auth-framework",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.5.0-rc1, < 0.5.0-rc71"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "0.5.0-rc71"
      ],
      "package_name": "auth-framework",
      "purl": "pkg:cargo/auth-framework"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.6.0-rc41, <= 0.6.0-rc45"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "0.6.0-rc46"
      ],
      "package_name": "auth-framework",
      "purl": "pkg:cargo/auth-framework"
    }
  ],
  "cwes": [
    287
  ],
  "cvss_score": 7.4,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/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": 15.965321033333334,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-27T07:31:17+00:00",
      "days": -0.14661117540509258,
      "is_lower_bound": true,
      "measured_at": "2026-10-27T11:02:24.308094+00:00",
      "url": "https://github.com/ciresnave/auth-framework/security/advisories/GHSA-35m9-986f-rhmh"
    }
  }
}