CVE-2026-19807

{
  "etk_id": "ETK-2026-223",
  "cve_id": "CVE-2026-19807",
  "display_id": "CVE-2026-19807",
  "ghsa_id": "GHSA-qwvr-5fhh-47xh",
  "euvd_id": "EUVD-2026-90548",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authenticated privilege escalation in ByteCoreStack MCP Connector",
  "summary": "ByteCoreStack – MCP Connector for AI Tools for WordPress is affected through version 1.2.3. An authenticated Subscriber-level or higher user can modify role-related account metadata and obtain Administrator privileges. Exploitation requires access to an authenticated WordPress account and the plugin's MCP endpoint.",
  "mitigation": "Disable the plugin or restrict access to its MCP endpoint until a corrected release is available. Review WordPress accounts and role assignments for unexpected Administrator privileges.",
  "vendor": "bytecorestack",
  "product": "ByteCoreStack – MCP Connector for AI Tools",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 1.2.3"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "ByteCoreStack – MCP Connector for AI Tools",
      "purl": null
    }
  ],
  "cwes": [
    269
  ],
  "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": 0.0038,
  "epss_percentile": 0.3091,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 38.604409,
  "t0_at": "2026-10-01T07:40:24.252000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-01T09:45:22.622514+00:00",
      "days": 0.0867866957638889,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T07:40:24.252000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-01T07:40:24.252000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T07:40:24.252000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-19807"
    }
  }
}