CVE-2026-105643

{
  "etk_id": "ETK-2026-842",
  "cve_id": "CVE-2026-105643",
  "display_id": "CVE-2026-105643",
  "ghsa_id": "GHSA-69qc-f5m6-889c",
  "euvd_id": "EUVD-2026-92632",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Ghost editor embed cards",
  "summary": "Ghost versions 6.34.0 through 6.65.0 are affected by stored cross-site scripting involving editor embed cards. A staff user, including a Contributor, may cause scripts in post content to run when another staff user opens that post in the editor, potentially exposing the latter user's administrative session. Exploitation requires staff-level access to create the post and another staff user to view it in the editor.",
  "mitigation": "Upgrade Ghost to version 6.67.0 or later. For self-hosted deployments, retain the default value for `security.embedPreviewUrl`.",
  "vendor": "npm",
  "product": "Ghost",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.34.0, < 6.67.0"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "6.67.0"
      ],
      "package_name": "ghost",
      "purl": "pkg:npm/ghost"
    }
  ],
  "cwes": [
    79
  ],
  "cvss_score": 7.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
  "epss_score": 0.0027,
  "epss_percentile": 0.1818,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 32.33960916666667,
  "t0_at": "2026-10-05T18:48:31.778000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-08T02:31:56.130714+00:00",
      "days": 2.3218096378935185,
      "is_lower_bound": false,
      "measured_at": "2026-10-05T18:48:31.778000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-05T18:48:31.778000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-05T18:48:31.778000+00:00",
      "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-69qc-f5m6-889c"
    }
  }
}