CVE-2026-107845

{
  "etk_id": "ETK-2026-1107",
  "cve_id": "CVE-2026-107845",
  "display_id": "CVE-2026-107845",
  "ghsa_id": "GHSA-628f-v4f6-p37r",
  "euvd_id": "EUVD-2026-95975",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Contao comments",
  "summary": "Contao comment metadata can contain stored script content submitted by an unauthenticated visitor. When a backend user opens the Comments module, the content can execute in that user's backend session; moderating unpublished comments does not prevent exposure.",
  "mitigation": "Upgrade Contao to 5.3.50 or 5.7.12, as appropriate for the supported release branch. Restrict public comment submission until the upgrade is complete.",
  "vendor": "contao",
  "product": "contao",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">=4.0.0"
      ],
      "ecosystem": "composer",
      "fixed_versions": [
        "5.3.50",
        "5.7.12"
      ],
      "package_name": "contao/comments-bundle",
      "purl": "pkg:composer/contao/comments-bundle"
    }
  ],
  "cwes": [
    79
  ],
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
  "epss_score": 0.0027,
  "epss_percentile": 0.1836,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 10.803042433333333,
  "t0_at": "2026-10-09T19:29:55.396000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-09T19:29:55.396000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T19:29:55.396000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-107845"
    }
  }
}