CVE-2025-13439

Fancy Product Designer | WooCommerce WordPress <= 6.4.8 - Unauthenticated Information Disclosure and PHAR Deserialization via 'url' Parameter

2025-12-15 00:00
Muhammad Zeeshan (Xib3rR4dAr)

Strategic Overview

Status
Patched in 6.5.0
Affected Plugin
Fancy Product Designer
Affected Version
<= 6.4.8
CVSS
5.9Medium
Weakness type
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE
CVE-2025-13439
View all Fancy Product Designer vulnerabilities

At a glance

CVE-2025-13439 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the Fancy Product Designer WordPress plugin, affecting versions <= 6.4.8. It carries a CVSS score of 5.9 (reachable over the network; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 6.5.0; sites on affected versions should update now. Disclosed December 2025, reported by Muhammad Zeeshan (Xib3rR4dAr).

Vulnerability Overview

The Fancy Product Designer plugin for WordPress is vulnerable to Information Disclosure and PHAR Deserialization in all versions up to, and including, 6.4.8. This is due to insufficient validation of user-supplied input in the 'url' parameter of the 'fpd_custom_uplod_file' AJAX action, which flows directly into the 'getimagesize' function without sanitization. This makes it possible for unauthenticated attackers to read arbitrary sensitive files from the server, including wp-config.php.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Fancy Product Designer <= 6.4.8 carries this weakness at url, and reaching it takes no account at all. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For Fancy Product Designer the fix is 6.5.0: builds <= 6.4.8 are affected, anything from 6.5.0 onward is not.

Remediation

Update to version 6.5.0, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Fancy Product Designer 6.5.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-13439https://www.wordfence.com/threat-intel/vulnerabilities/id/4fd6df9d-2963-44b1-bc4e-e53eda97a2a9https://nvd.nist.gov/vuln/detail/CVE-2025-13439

Related records

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