CVE-2025-15512: Aplazo Payment Gateway Auth Bypass Flaw

CVE-2025-15512 Overview

The Aplazo Payment Gateway plugin for WordPress contains an authorization bypass vulnerability due to a missing capability check on the check_success_response() function. This security flaw affects all versions up to and including 1.4.2, allowing unauthenticated attackers to modify WooCommerce order statuses without proper authorization.

Critical Impact

Unauthenticated attackers can manipulate WooCommerce order statuses, potentially disrupting e-commerce operations and causing financial discrepancies by setting any order to pending payment status.

Affected Products

• Aplazo Payment Gateway WordPress Plugin versions up to and including 1.4.2
• WordPress sites running WooCommerce with the vulnerable plugin installed
• E-commerce platforms utilizing Aplazo payment processing integration

Discovery Timeline

• 2026-01-14 - CVE-2025-15512 published to NVD
• 2026-01-14 - Last updated in NVD database

Technical Details for CVE-2025-15512

Vulnerability Analysis

This vulnerability is classified as Missing Authorization (CWE-862), a common security weakness in WordPress plugins where critical functions lack proper capability checks. The check_success_response() function in the Aplazo Payment Gateway plugin processes payment callback responses but fails to verify whether the requesting user has appropriate permissions to modify order statuses.

The flaw allows any unauthenticated user to invoke this function and change the status of WooCommerce orders to pending payment. This type of broken access control can lead to significant business disruption, as legitimate completed orders could be reverted to pending status, affecting order fulfillment workflows and potentially causing customer service issues.

Root Cause

The root cause lies in the absence of a WordPress capability check within the check_success_response() function located in class-aplazo-module.php at line 206. WordPress provides functions like current_user_can() to verify user permissions before executing sensitive operations. The vulnerable code processes incoming requests without validating that the caller has the manage_woocommerce or similar capability required to modify order statuses.

Attack Vector

The attack is network-accessible and requires no authentication or user interaction. An attacker can directly send crafted HTTP requests to the WordPress site targeting the vulnerable endpoint. By manipulating the parameters expected by check_success_response(), the attacker can specify arbitrary order IDs and trigger status changes to pending payment.

The vulnerability can be exploited by identifying valid WooCommerce order IDs (which are often sequential integers) and sending requests that invoke the unprotected function. This could be automated to affect multiple orders in rapid succession.

For technical implementation details, see the WordPress Plugin Source Code and the Wordfence Vulnerability Report.

Detection Methods for CVE-2025-15512

Indicators of Compromise

• Unexpected WooCommerce orders reverting to pending payment status without customer action
• Unusual HTTP requests targeting Aplazo payment callback endpoints from external IP addresses
• Multiple order status changes occurring in rapid succession from non-admin sessions
• Web server logs showing unauthenticated requests to plugin-specific endpoints

Detection Strategies

• Monitor WooCommerce order status change logs for anomalous patterns affecting completed orders
• Implement Web Application Firewall (WAF) rules to detect and block suspicious requests to payment gateway callbacks
• Review WordPress access logs for requests targeting /wp-content/plugins/aplazo-payment-gateway/ endpoints
• Configure alerting for bulk order status modifications outside of normal business operations

Monitoring Recommendations

• Enable WooCommerce order activity logging to track all status changes with timestamps and source information
• Deploy SentinelOne Singularity XDR to monitor for suspicious WordPress plugin activity and unauthorized data modifications
• Implement real-time monitoring of payment processing endpoints for anomalous request patterns
• Set up automated alerts for any order status changes not initiated through the WordPress admin interface

How to Mitigate CVE-2025-15512

Immediate Actions Required

• Update the Aplazo Payment Gateway plugin to a version newer than 1.4.2 that includes the security fix
• Temporarily disable the Aplazo Payment Gateway plugin if an update is not immediately available
• Audit recent WooCommerce orders for unauthorized status changes and restore affected orders
• Implement additional access controls at the web server level to restrict access to payment callback endpoints

Patch Information

Site administrators should check for updates to the Aplazo Payment Gateway plugin through the WordPress plugin repository. The fix should include proper capability checks using WordPress functions like current_user_can() before allowing order status modifications. Review the Wordfence Vulnerability Report for the latest patch status and remediation guidance.

Workarounds

• Implement IP whitelisting at the web server level to restrict access to payment callback URLs to known Aplazo payment processing servers only
• Deploy a Web Application Firewall (WAF) rule to require authentication for requests targeting the vulnerable endpoint
• Add custom code to functions.php or a security plugin to enforce capability checks on the vulnerable function
• Consider temporarily switching to an alternative payment gateway until the plugin is patched

# Example .htaccess rule to restrict access to the plugin directory
<Directory "/var/www/html/wp-content/plugins/aplazo-payment-gateway">
    Order Deny,Allow
    Deny from all
    # Allow only from Aplazo payment processing IPs (verify current IPs with Aplazo)
    Allow from 203.0.113.0/24
</Directory>