CVE-2025-67942: Peach Payments Gateway Auth Bypass Flaw

CVE-2025-67942 Overview

CVE-2025-67942 is a Missing Authorization vulnerability (CWE-862) affecting the Peach Payments Gateway plugin for WordPress and WooCommerce. This broken access control vulnerability allows attackers to exploit incorrectly configured access control security levels within the wc-peach-payments-gateway plugin, potentially enabling unauthorized access to payment gateway functionality or sensitive payment-related operations.

Critical Impact

Unauthorized users may be able to access or manipulate payment gateway functions that should be restricted to authenticated administrators, potentially leading to financial fraud, data exposure, or disruption of payment processing.

Affected Products

• Peach Payments Gateway (wc-peach-payments-gateway) versions through <= 3.3.6
• WordPress installations with the vulnerable plugin version
• WooCommerce stores utilizing Peach Payments for payment processing

Discovery Timeline

• 2026-01-22 - CVE CVE-2025-67942 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-67942

Vulnerability Analysis

This vulnerability stems from a Missing Authorization flaw (CWE-862) in the Peach Payments Gateway WordPress plugin. The plugin fails to properly verify user permissions before allowing access to certain functionality, resulting in broken access control. This type of vulnerability occurs when an application does not perform adequate authorization checks to ensure that a user has the required privileges to perform a requested action.

In the context of a payment gateway plugin, missing authorization can have serious implications. The plugin likely exposes administrative endpoints, AJAX handlers, or REST API routes that handle sensitive payment operations without verifying that the requesting user has appropriate capabilities. Attackers could potentially invoke these unprotected functions to access payment configuration settings, view transaction data, or manipulate payment processing behavior.

Root Cause

The root cause is improper implementation of access control mechanisms within the Peach Payments Gateway plugin. WordPress provides capability-checking functions such as current_user_can() that should be used to verify user permissions before executing privileged operations. The absence of these checks, or their incorrect implementation, allows unauthorized users to bypass intended security restrictions.

Common patterns leading to this vulnerability include:

• Missing capability checks in AJAX action handlers registered with wp_ajax_nopriv_* hooks
• REST API endpoints lacking proper permission callbacks
• Administrative functions accessible without nonce verification combined with capability checks
• Direct access to plugin files without proper WordPress context validation

Attack Vector

An attacker can exploit this vulnerability by identifying unprotected endpoints or functions within the plugin and directly invoking them without proper authentication or authorization. Since this is a WordPress plugin vulnerability, attack vectors typically include:

The attacker would first identify vulnerable AJAX endpoints or REST API routes exposed by the plugin. By crafting malicious requests to these endpoints—potentially as an unauthenticated user or a low-privileged subscriber—they can access functionality intended only for administrators. This could include accessing payment gateway configuration, viewing transaction logs, or modifying payment processing settings.

For detailed technical information about this vulnerability, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-67942

Indicators of Compromise

• Unexpected access to payment gateway administrative functions by non-administrator users
• Unusual AJAX requests or REST API calls to wc-peach-payments-gateway endpoints from unauthenticated sessions
• Modifications to payment gateway settings without corresponding administrator activity logs
• Anomalous patterns in WooCommerce payment processing or transaction handling

Detection Strategies

• Monitor WordPress AJAX handlers and REST API endpoints for requests from unauthenticated or low-privileged users attempting to access payment gateway functions
• Implement logging for all administrative actions within the Peach Payments Gateway plugin configuration
• Review server access logs for direct requests to plugin files or suspicious parameter patterns
• Deploy Web Application Firewall (WAF) rules to detect and block common broken access control attack patterns

Monitoring Recommendations

• Enable detailed WordPress audit logging to track user capability escalation attempts
• Monitor WooCommerce order and payment logs for anomalies that could indicate unauthorized access
• Configure alerts for configuration changes to the Peach Payments Gateway settings
• Regularly review user access patterns to payment-related WordPress admin pages

How to Mitigate CVE-2025-67942

Immediate Actions Required

• Update the Peach Payments Gateway plugin to a patched version as soon as one becomes available
• Audit your WordPress installation for any signs of unauthorized access to payment gateway functions
• Review user accounts for any unauthorized privilege assignments or suspicious administrator accounts
• Consider temporarily disabling the plugin if a patch is not yet available and your store is at high risk

Patch Information

Check the Patchstack Vulnerability Report for the latest patch status and updated version information. Ensure you update to a version higher than 3.3.6 once a security fix is released by the vendor.

Workarounds

• Implement server-level access restrictions to limit who can access WordPress AJAX and REST API endpoints
• Use a WordPress security plugin to add additional authorization layers and access logging
• Configure your web server to block direct access to plugin directories and files
• Enable WordPress two-factor authentication for all administrative accounts to reduce attack surface

# Example: Restrict access to WordPress AJAX handler at the server level (Apache .htaccess)
<Files admin-ajax.php>
    Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
    Allow from your.trusted.ip.address
</Files>