CVE-2026-4337

{
  "etk_id": "ETK-2026-2752",
  "cve_id": "CVE-2026-4337",
  "display_id": "CVE-2026-4337",
  "ghsa_id": "GHSA-57jc-x74j-f4w4",
  "euvd_id": "EUVD-2026-110807",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated arbitrary file upload in PuMuKIT",
  "summary": "Affected PuMuKIT deployments may let an unauthenticated remote attacker place files of attacker-chosen types in locations writable by the web-server account. This can enable unauthorized modification of server-side content and may permit deletion of writable files.",
  "mitigation": "No patched version is identified in the available evidence. Restrict or disable unauthenticated upload access, limit the web-server account to only necessary write locations, and prevent executable content from being served from writable directories.",
  "vendor": "PuMuKIT",
  "product": "PuMuKIT",
  "affected": [
    {
      "affected_notes": [
        "current version"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "PuMuKIT",
      "purl": null
    }
  ],
  "cwes": [
    434
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 49.308070683333334,
  "t0_at": "2026-10-27T11:03:15.829000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-27T12:22:53.746870+00:00",
      "days": 0.055299975347222224,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T11:03:15.829000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-27T11:03:15.829000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T11:03:15.829000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-4337"
    }
  }
}