CVE-2025-14864: Virusdie WordPress Information Disclosure

CVE-2025-14864 Overview

The Virusdie - One-click website security plugin for WordPress contains a Sensitive Information Exposure vulnerability affecting all versions up to and including 1.1.7. This security flaw stems from missing capability checks on the vd_get_apikey function, which is hooked to the wp_ajax_virusdie_apikey AJAX action. The vulnerability enables authenticated attackers with Subscriber-level access or higher to retrieve the site's Virusdie API key, potentially leading to unauthorized access to the site owner's Virusdie account and compromise of site security.

Critical Impact

Authenticated attackers with minimal privileges (Subscriber-level) can extract the Virusdie API key, enabling unauthorized access to the site owner's Virusdie security dashboard and potentially compromising the overall website security posture.

Affected Products

• Virusdie - One-click website security plugin for WordPress versions ≤ 1.1.7
• WordPress installations using vulnerable Virusdie plugin versions
• Virusdie accounts connected to compromised WordPress sites

Discovery Timeline

• 2026-02-19 - CVE-2025-14864 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2025-14864

Vulnerability Analysis

This vulnerability is classified as CWE-862 (Missing Authorization), a broken access control flaw where the application fails to perform adequate permission checks before executing a sensitive operation. The vd_get_apikey function exposes the Virusdie API key through the WordPress AJAX handler wp_ajax_virusdie_apikey without verifying that the requesting user has administrative privileges.

In WordPress, AJAX actions prefixed with wp_ajax_ are accessible to any authenticated user, regardless of their role. When developers fail to implement capability checks using functions like current_user_can(), low-privileged users such as Subscribers can invoke administrative functions. In this case, any authenticated user can request and retrieve the API key that should only be accessible to site administrators.

The exposure of the Virusdie API key has significant security implications. An attacker who obtains this key could potentially access the Virusdie dashboard for the affected site, modify security configurations, disable malware scanning and protection features, or pivot to compromise additional sites managed under the same Virusdie account.

Root Cause

The root cause of this vulnerability is the absence of authorization checks in the vd_get_apikey function before returning sensitive API key data. The function is registered as a WordPress AJAX handler but does not validate that the requesting user has the appropriate administrative capabilities (such as manage_options). This oversight allows any authenticated user, including those with the lowest-privileged Subscriber role, to access the API key retrieval endpoint.

The vulnerable code paths can be examined in the class-virusdie.php and class-virusdie-behavior.php files in the plugin repository.

Attack Vector

The attack is network-based and requires only low-level authentication (Subscriber account) with no user interaction needed. An attacker with a WordPress Subscriber account can craft an AJAX request to the wp_ajax_virusdie_apikey action endpoint. The WordPress AJAX handler processes the request without verifying the user's role or capabilities, returning the Virusdie API key in the response.

The exploitation process involves authenticating to WordPress with any valid user account (Subscriber-level or above), sending a POST request to /wp-admin/admin-ajax.php with the action parameter set to virusdie_apikey, and extracting the API key from the server response. With the obtained API key, the attacker can then access the Virusdie external service to manipulate the site's security settings or gather additional intelligence for further attacks.

Detection Methods for CVE-2025-14864

Indicators of Compromise

• Unexpected AJAX requests to admin-ajax.php with action parameter virusdie_apikey from non-administrator users
• Log entries showing Subscriber or Contributor accounts accessing Virusdie-related AJAX endpoints
• Unusual authentication activity on the Virusdie external dashboard from unrecognized IP addresses
• Configuration changes in Virusdie account settings not authorized by site administrators

Detection Strategies

• Monitor WordPress access logs for POST requests to admin-ajax.php containing action=virusdie_apikey from low-privileged user sessions
• Implement Web Application Firewall (WAF) rules to alert on sensitive AJAX action access patterns from non-admin user roles
• Review Virusdie account activity logs for unauthorized API key usage or dashboard access
• Deploy endpoint detection solutions to monitor for anomalous WordPress admin activity patterns

Monitoring Recommendations

• Enable comprehensive logging for WordPress AJAX requests including user role context and request parameters
• Configure alerts for any access to the virusdie_apikey AJAX action by non-administrator accounts
• Implement centralized log aggregation to correlate WordPress authentication events with Virusdie API access patterns
• Establish baseline behavior for legitimate Virusdie plugin usage to identify deviations

How to Mitigate CVE-2025-14864

Immediate Actions Required

• Update the Virusdie plugin to a patched version immediately if available
• Audit WordPress user accounts and remove or demote unnecessary Subscriber and Contributor accounts
• Regenerate the Virusdie API key through the Virusdie dashboard and update the plugin configuration
• Review Virusdie account activity logs for any signs of unauthorized access during the exposure window

Patch Information

A patch for this vulnerability is available through the WordPress plugin repository. The security fix can be reviewed in the plugin changeset. Site administrators should update to a version newer than 1.1.7 that includes proper capability checks for the vd_get_apikey function. For detailed vulnerability information, refer to the Wordfence vulnerability report.

Workarounds

• Temporarily deactivate the Virusdie plugin until a patched version can be installed
• Implement a custom WordPress mu-plugin that adds capability checks to the vulnerable AJAX action
• Restrict access to admin-ajax.php using server-level rules for non-essential users
• Use a Web Application Firewall to block requests to the virusdie_apikey action from non-admin authenticated sessions

# Apache .htaccess rule to restrict virusdie AJAX action (temporary workaround)
# Place in WordPress root directory
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php$ [NC]
RewriteCond %{QUERY_STRING} action=virusdie_apikey [NC,OR]
RewriteCond %{REQUEST_BODY} action=virusdie_apikey [NC]
RewriteRule ^(.*)$ - [F,L]
</IfModule>