CVE-2025-12539

Critical

Description

The TNC Toolbox: Web Performance plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.4.2. This is due to the plugin storing cPanel API credentials (hostname, username, and API key) in files within the web-accessible wp-content directory without adequate protection in the "Tnc_Wp_Toolbox_Settings::save_settings" function. This makes it possible for unauthenticated attackers to retrieve these credentials and use them to interact with the cPanel API, which can lead to arbitrary file uploads, remote code execution, and full compromise of the hosting environment.

SeverityCritical
CVSS10.0
Exploit probability—
ProductTNC Toolbox: Web Performance
PublishedNov 11, 2025
First seenNov 11, 2025
Weakness typeCWE-922CWE-922

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
leopardhost TNC Toolbox: Web Performancev ≤ 1.4.2—

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CVE-2025-12539 · TNC Toolbox: Web Performance · Dark Radar