CVE-2026-4248

{"id": "CVE-2026-4248", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}]}, "published": "2026-03-27T23:17:14.753", "references": [{"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", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-285"}]}], "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 '{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."}, {"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 '{usermeta:password_reset_link}' se procesa dentro del contenido de una publicaci\u00f3n a trav\u00e9s del shortcode '[um_loggedin]', 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."}], "lastModified": "2026-04-24T16:36:24.067", "sourceIdentifier": "security@wordfence.com"}