CVE-2026-75891

{
  "etk_id": "ETK-2026-2734",
  "cve_id": "CVE-2026-75891",
  "display_id": "CVE-2026-75891",
  "ghsa_id": "GHSA-ppv3-rhmr-8mqr",
  "euvd_id": "EUVD-2026-110629",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authenticated PHP object injection in Kirki WordPress plugin",
  "summary": "Kirki for WordPress through version 6.2.5 lacks an authorization check on an AJAX path that processes untrusted serialized input. An attacker with a Subscriber-level or higher account may inject PHP objects and, where a usable object chain is present, take over an administrator account.",
  "mitigation": "Disable Kirki until a vendor-fixed release is identified, or prevent untrusted users from obtaining Subscriber-level accounts. Review WordPress users and administrator credentials for signs of unauthorized changes.",
  "vendor": "themeum",
  "product": "Kirki – Freeform Page Builder, Website Builder & Customizer",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 6.2.5"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Kirki – Freeform Page Builder, Website Builder & Customizer",
      "purl": null
    }
  ],
  "cwes": [
    502
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 46.1233378,
  "t0_at": "2026-10-27T06:40:42.359000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-27T06:40:42.359000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T06:40:42.359000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-75891"
    }
  }
}