CVE-2026-103474

{
  "etk_id": "ETK-2026-159",
  "cve_id": "CVE-2026-103474",
  "display_id": "CVE-2026-103474",
  "ghsa_id": "GHSA-hfh8-jhpw-h99w",
  "euvd_id": "EUVD-2026-90205",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unrestricted file upload in yii2-starter-kit",
  "summary": "yii2-starter-kit through 4.2.0 does not adequately restrict file types accepted by backend storage uploads. An authenticated user with the manager role can upload server-executable files to a web-accessible location, potentially leading to code execution on the host.",
  "mitigation": "Restrict manager access and disable or limit backend storage uploads until file-type validation and execution controls are in place. Configure the upload storage directory to prevent execution of uploaded files; no fixed version is recorded.",
  "vendor": "yii2-starter-kit",
  "product": "yii2-starter-kit",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 4.2.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "yii2-starter-kit",
      "purl": null
    }
  ],
  "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": 0.0039,
  "epss_percentile": 0.3149,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 21.898745116666667,
  "t0_at": "2026-09-30T17:22:41.048000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-30T17:22:41.048000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T17:22:41.048000+00:00",
      "url": "https://github.com/advisories/GHSA-hfh8-jhpw-h99w"
    }
  }
}