CVE-2026-104890

{
  "etk_id": "ETK-2026-659",
  "cve_id": "CVE-2026-104890",
  "display_id": "CVE-2026-104890",
  "ghsa_id": "GHSA-p279-5wcv-45vq",
  "euvd_id": "EUVD-2026-92446",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Executable file upload bypass in Kunstmaan MediaBundle",
  "summary": "Kunstmaan MediaBundle versions before 7.3.2 can mishandle executable file extensions during media uploads. An authenticated backend user with media access may cause server-executed content to be placed in the upload directory when that directory permits script execution.",
  "mitigation": "Upgrade `kunstmaan/media-bundle` and `kunstmaan/bundles-cms` to version 7.3.2 or later. Until then, disable script execution in the media upload directory and review existing uploads for executable file types.",
  "vendor": "Kunstmaan",
  "product": "KunstmaanBundlesCMS",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 7.3.2"
      ],
      "ecosystem": "composer",
      "fixed_versions": [
        "7.3.2"
      ],
      "package_name": "kunstmaan/media-bundle",
      "purl": "pkg:composer/kunstmaan/media-bundle"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 7.3.2"
      ],
      "ecosystem": "composer",
      "fixed_versions": [
        "7.3.2"
      ],
      "package_name": "kunstmaan/bundles-cms",
      "purl": "pkg:composer/kunstmaan/bundles-cms"
    }
  ],
  "cwes": [
    434
  ],
  "cvss_score": 7.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0042,
  "epss_percentile": 0.3453,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.159999066666668,
  "t0_at": "2026-10-05T15:46:21.959000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-05T16:23:01.030944+00:00",
      "days": 0.025452221574074074,
      "is_lower_bound": false,
      "measured_at": "2026-10-05T15:46:21.959000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-05T15:46:21.959000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-05T15:46:21.959000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-104890"
    }
  }
}