FKIE_CVE-2026-4248

Vulnerability from fkie_nvd - Published: 2026-03-27 23:17 - Updated: 2026-04-24 16:36
Severity ?
8.0 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Summary
The Ultimate Member plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.2. This is due to the '{usermeta:password_reset_link}' template tag being processed within post content via the '[um_loggedin]' shortcode, which generates a valid password reset token for the currently logged-in user viewing the page. This makes it possible for authenticated attackers, with Contributor-level access and above, to craft a malicious pending post that, when previewed by an Administrator, generates a password reset token for the Administrator and exfiltrates it to an attacker-controlled server, leading to full account takeover.
References
security@wordfence.comhttps://github.com/ultimatemember/ultimatemember/pull/1799
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/um-short-functions.php#L205
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset/3492178/ultimate-member/trunk/includes/um-short-functions.php
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/baafd001-144d-4ee4-b7e6-28c0931e6e10?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Ultimate Member plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.2. This is due to the \u0027{usermeta:password_reset_link}\u0027 template tag being processed within post content via the \u0027[um_loggedin]\u0027 shortcode, which generates a valid password reset token for the currently logged-in user viewing the page. This makes it possible for authenticated attackers, with Contributor-level access and above, to craft a malicious pending post that, when previewed by an Administrator, generates a password reset token for the Administrator and exfiltrates it to an attacker-controlled server, leading to full account takeover."
    },
    {
      "lang": "es",
      "value": "El plugin Ultimate Member para WordPress es vulnerable a la exposici\u00f3n de informaci\u00f3n sensible en todas las versiones hasta e incluyendo la 2.11.2. Esto se debe a que la etiqueta de plantilla \u0027{usermeta:password_reset_link}\u0027 se procesa dentro del contenido de una publicaci\u00f3n a trav\u00e9s del shortcode \u0027[um_loggedin]\u0027, lo que genera un token de restablecimiento de contrase\u00f1a v\u00e1lido para el usuario actualmente conectado que ve la p\u00e1gina. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador o superior, creen una publicaci\u00f3n maliciosa pendiente que, cuando es previsualizada por un Administrador, genera un token de restablecimiento de contrase\u00f1a para el Administrador y lo exfiltra a un servidor controlado por el atacante, lo que lleva a una toma de control total de la cuenta."
    }
  ],
  "id": "CVE-2026-4248",
  "lastModified": "2026-04-24T16:36:24.067",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 5.9,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-27T23:17:14.753",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://github.com/ultimatemember/ultimatemember/pull/1799"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/um-short-functions.php#L205"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset/3492178/ultimate-member/trunk/includes/um-short-functions.php"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/baafd001-144d-4ee4-b7e6-28c0931e6e10?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}


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