{
  "id": "CVE-2026-104736",
  "url": "https://spydr.io/cve/CVE-2026-104736",
  "published": "2026-10-17T04:16:47.780Z",
  "modified": "2026-10-17T04:16:47.780Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "wordfence.com",
  "epss": 0.00438,
  "epss_percentile": 0.36594,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": null,
  "vendors": [
    "thimpress"
  ],
  "products": [
    "thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses"
  ],
  "cwes": [
    "CWE-502"
  ],
  "description": "The LearnPress plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.4.10 via deserialization of untrusted input from the 'checkout-email' request parameter during the checkout AJAX action. The value is passed through sanitize_text_field(), which does not strip serialized object syntax, then stored in the LearnPress session table and later fed to LP_Helper::maybe_unserialize() → unserialize() (without an allowed_classes restriction) by LP_Session_Handler::get() on subsequent requests. This makes it possible for unauthenticated attackers to inject a PHP Object.",
  "status": "Received",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-ajax.php#L21",
      "tags": []
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-checkout.php#L377",
      "tags": []
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-checkout.php#L523",
      "tags": []
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-session-handler.php#L373",
      "tags": []
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3750024%40learnpress&new=3750024%40learnpress",
      "tags": []
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3e28e008-0ec1-4262-9ac0-6170cf8b8bdf?source=cve",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104736",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}