ETK-2026-3378Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-3378",
  "cve_id": null,
  "display_id": "ETK-2026-3378",
  "ghsa_id": "GHSA-f3fg-34g9-v7jx",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "ID-JAG scope validation bypass in Authlib",
  "summary": "Authlib 1.9.0 through 1.9.1 mishandles scope validation in the opt-in ID-JAG grant flow. A confidential client with valid credentials and a valid identity assertion may obtain a token with scopes beyond those authorized by the identity provider when its registration and local policy allow them.",
  "mitigation": "Upgrade Authlib to version 1.9.2. Disable the ID-JAG grant until upgrading if it is not required.",
  "vendor": "pip",
  "product": "pip:Authlib",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.9.0, <= 1.9.1"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "1.9.2"
      ],
      "package_name": "Authlib",
      "purl": "pkg:pypi/Authlib"
    }
  ],
  "cwes": [
    863
  ],
  "cvss_score": 7.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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": 10.207443766666668,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-11-01T20:45:07+00:00",
      "days": -1.8649139664814816,
      "is_lower_bound": true,
      "measured_at": "2026-11-03T17:30:35.601636+00:00",
      "url": "https://github.com/authlib/authlib/security/advisories/GHSA-f3fg-34g9-v7jx"
    },
    "trigger_signal": {
      "at": "2026-11-01T20:45:07+00:00",
      "days": -1.8649139664814816,
      "is_lower_bound": true,
      "measured_at": "2026-11-03T17:30:35.601636+00:00",
      "url": "https://github.com/authlib/authlib/security/advisories/GHSA-f3fg-34g9-v7jx"
    }
  }
}