CVE-2026-16940
Received Received - Intake

Unauthenticated File Deletion in Custom Fields WordPress Plugin

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: WPScan

Description
The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing unauthenticated users to delete arbitrary files on the server (such as wp-config.php), which can lead to a full site takeover.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-16940
EUVD
EUVD-2026-53110

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
custom_fields wordpress_plugin to 1.5.1 (exc)
custom_fields woocommerce_plugin to 1.5.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is in the Custom Fields WordPress plugin before version 1.5.1. It allows unauthenticated users to delete arbitrary files on the server by supplying a file path without proper validation. This includes critical files like wp-config.php, which could lead to a full site takeover.

Detection Guidance

Check the installed version of the Custom Fields for WooCommerce plugin. If it is below 1.5.1, the system is vulnerable. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files directly.

Impact Analysis

An attacker could exploit this to delete important files on your server, such as configuration files. This may cause your website to stop functioning, expose sensitive data, or allow the attacker to take complete control of your site.

Compliance Impact

This vulnerability could lead to unauthorized access or deletion of sensitive data, violating compliance requirements under GDPR, HIPAA, or other regulations. It may result in data breaches, loss of personal data, and potential legal penalties.

Mitigation Strategies

Update the Custom Fields for WooCommerce plugin to version 1.5.1 or later immediately. If updating is not possible, consider disabling the plugin until an update is applied to prevent exploitation.

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