ETK-2026-2654Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2654",
  "cve_id": null,
  "display_id": "ETK-2026-2654",
  "ghsa_id": "GHSA-g665-42m7-mgcv",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Cross-cluster authorization bypass in gpustack worker registration",
  "summary": "gpustack versions before 2.3.0 do not properly enforce cluster boundaries when processing worker registrations. An attacker with a worker registration token for any cluster may alter registrations in another cluster, potentially redirecting workloads or accessing that cluster's resources.",
  "mitigation": "Upgrade gpustack to version 2.3.0 or later. Until upgraded, limit management API network access and treat worker registration tokens as privileged credentials.",
  "vendor": "pip",
  "product": "pip:gpustack",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">=2.2.0",
        "<2.3.0"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "2.3.0"
      ],
      "package_name": "gpustack",
      "purl": "pkg:pypi/gpustack"
    }
  ],
  "cwes": null,
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 47.6495638,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-26T01:37:41+00:00",
      "days": -0.7195922331018518,
      "is_lower_bound": true,
      "measured_at": "2026-10-26T18:53:53.797582+00:00",
      "url": "https://github.com/gpustack/gpustack/security/advisories/GHSA-g665-42m7-mgcv"
    }
  }
}