CVE-2025-49320: FraudLabs Pro Authorization Bypass Flaw

CVE-2025-49320 Overview

CVE-2025-49320 is a missing authorization vulnerability in the FraudLabs Pro for WooCommerce plugin for WordPress. The flaw affects all plugin versions up to and including 2.22.11. It stems from incorrectly configured access control security levels, allowing unauthenticated network attackers to reach functionality that should require authorization. The weakness maps to [CWE-862: Missing Authorization]. Successful exploitation can lead to limited integrity impact on affected WooCommerce sites running the plugin.

Critical Impact

Unauthenticated attackers can exploit broken access control in FraudLabs Pro for WooCommerce versions through 2.22.11 to trigger plugin functionality without proper authorization checks.

Affected Products

• FraudLabs Pro for WooCommerce plugin (fraudlabs-pro-for-woocommerce)
• All versions from n/a through <= 2.22.11
• WordPress sites running WooCommerce with the affected plugin installed

Discovery Timeline

• 2025-06-06 - CVE-2025-49320 published to NVD
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-49320

Vulnerability Analysis

The vulnerability is a broken access control issue in the FraudLabs Pro for WooCommerce plugin. The plugin exposes functionality without verifying that the requesting user has the required capability or role. Because the access control layer is incorrectly configured, requests from unauthenticated actors can reach code paths intended for privileged users. The Common Weakness Enumeration classification is [CWE-862], which covers cases where a function does not perform an authorization check when an actor attempts to access a resource or perform an action.

Exploitation requires no user interaction and can be performed remotely over the network. The impact is limited to integrity, with no direct impact on confidentiality or availability of the underlying host. In practice this means attackers may modify plugin state or invoke administrative-style functions without proper credentials.

Root Cause

The root cause is missing or misconfigured capability checks within plugin request handlers. Endpoints that should validate a nonce plus a WordPress capability such as manage_woocommerce instead accept requests from any origin. This design flaw allows any network-reachable actor to invoke protected behavior.

Attack Vector

The attack vector is network-based. An attacker sends crafted HTTP requests to the vulnerable plugin endpoints on a WordPress site running FraudLabs Pro for WooCommerce <= 2.22.11. No authentication and no user interaction are required. See the Patchstack Vulnerability Report for additional technical context.

No public proof-of-concept exploit and no confirmed in-the-wild exploitation are currently reported.

Detection Methods for CVE-2025-49320

Indicators of Compromise

• Unexpected HTTP POST or GET requests to FraudLabs Pro for WooCommerce plugin endpoints from unauthenticated sessions.
• WooCommerce or plugin configuration changes with no corresponding administrator login event in WordPress audit logs.
• Anomalous request bursts targeting /wp-admin/admin-ajax.php or plugin-specific action parameters referencing fraudlabs.

Detection Strategies

• Inventory WordPress sites and identify installations of fraudlabs-pro-for-woocommerce at or below version 2.22.11.
• Enable a WordPress activity log plugin to record plugin setting changes and correlate them with authenticated administrator sessions.
• Deploy web application firewall rules that require valid authentication cookies and nonces for privileged plugin actions.

Monitoring Recommendations

• Alert on requests to plugin action handlers that lack a valid wp_nonce parameter or logged-in user cookie.
• Monitor for changes to WooCommerce order handling, fraud check settings, or API keys tied to FraudLabs Pro.
• Review web server logs for repeated access to plugin endpoints from single external IP addresses.

How to Mitigate CVE-2025-49320

Immediate Actions Required

• Update the FraudLabs Pro for WooCommerce plugin to a version later than 2.22.11 as soon as the vendor releases a fixed release.
• Audit WooCommerce and plugin configuration for unauthorized modifications made prior to patching.
• Restrict administrative endpoints at the web application firewall layer to trusted IP ranges where feasible.

Patch Information

At the time of NVD publication, the vulnerability affects FraudLabs Pro for WooCommerce versions up to and including 2.22.11. Site operators should consult the Patchstack Vulnerability Report and the plugin vendor's changelog for a fixed release and apply it immediately.

Workarounds

• Temporarily deactivate the FraudLabs Pro for WooCommerce plugin until a fixed version is installed.
• Apply web application firewall rules that block unauthenticated access to plugin AJAX and REST endpoints.
• Enforce least-privilege capabilities on WordPress administrator and shop manager roles to reduce blast radius.

# Example: block unauthenticated access to plugin endpoints via nginx
location ~* /wp-admin/admin-ajax.php {
    if ($arg_action ~* "fraudlabs") {
        if ($http_cookie !~* "wordpress_logged_in") {
            return 403;
        }
    }
}