CVE-2026-24606: Bayarcash WooCommerce Auth Bypass Flaw

CVE-2026-24606 Overview

CVE-2026-24606 is a Missing Authorization vulnerability (CWE-862) affecting the Bayarcash WooCommerce plugin by Web Impian. This vulnerability allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized access to protected functionality within WordPress e-commerce installations using the affected payment gateway plugin.

The vulnerability arises from a Broken Access Control flaw where the plugin fails to properly verify user permissions before allowing access to sensitive functionality. Attackers can exploit this remotely without authentication, potentially gaining unauthorized access to information that should be restricted.

Critical Impact

Unauthorized users may gain access to sensitive data or functionality within the Bayarcash WooCommerce payment integration without proper authorization checks, potentially compromising e-commerce transaction data and store configurations.

Affected Products

• Bayarcash WooCommerce plugin versions up to and including 4.3.11
• WordPress installations using the bayarcash-wc plugin
• WooCommerce stores integrated with Bayarcash payment gateway

Discovery Timeline

• 2026-01-23 - CVE-2026-24606 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24606

Vulnerability Analysis

This vulnerability represents a Missing Authorization flaw in the Bayarcash WooCommerce plugin. The core issue lies in the plugin's failure to implement proper authorization checks before granting access to certain functionality. In WordPress plugin development, proper authorization requires both authentication checks (verifying the user is logged in) and capability checks (verifying the user has permission to perform the action).

When these checks are missing or improperly implemented, attackers can access functionality intended only for authorized users. The network-accessible nature of this vulnerability means it can be exploited remotely without any user interaction, making it particularly concerning for publicly accessible WordPress e-commerce sites.

Root Cause

The root cause of CVE-2026-24606 is the absence of proper authorization verification within the Bayarcash WooCommerce plugin. WordPress plugins must implement capability checks using functions like current_user_can() to verify that the requesting user has appropriate permissions before executing privileged operations. The affected plugin versions (<= 4.3.11) fail to perform these necessary authorization checks, allowing unauthenticated or unauthorized users to access restricted functionality.

This type of vulnerability commonly occurs when developers focus on functionality without implementing the security boundary checks required to protect sensitive operations in a multi-user WordPress environment.

Attack Vector

The attack can be executed remotely over the network without requiring authentication or user interaction. An attacker can directly access vulnerable endpoints or functionality within the Bayarcash WooCommerce plugin that lacks proper authorization checks.

The exploitation path typically involves:

1. Identifying WordPress sites running vulnerable versions of the Bayarcash WooCommerce plugin
2. Locating plugin endpoints or AJAX handlers that lack authorization checks
3. Sending crafted requests to access functionality or data without proper credentials
4. Extracting sensitive information or manipulating plugin settings

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

Detection Methods for CVE-2026-24606

Indicators of Compromise

• Unusual access patterns to Bayarcash WooCommerce plugin endpoints from unauthenticated sessions
• Unexpected modifications to plugin settings or payment gateway configurations
• Access log entries showing requests to plugin-specific AJAX actions without corresponding authentication
• Anomalous data access patterns involving payment or transaction-related information

Detection Strategies

• Monitor WordPress access logs for requests to /wp-admin/admin-ajax.php with Bayarcash-related action parameters from unauthenticated sources
• Implement Web Application Firewall (WAF) rules to detect and block suspicious requests targeting the bayarcash-wc plugin
• Deploy endpoint detection solutions to identify unauthorized access attempts to WooCommerce and payment plugin functionality
• Review WordPress audit logs for unexpected configuration changes to payment gateway settings

Monitoring Recommendations

• Enable comprehensive logging for all WordPress AJAX requests and REST API calls
• Configure alerts for access attempts to sensitive plugin functionality from unauthenticated sessions
• Implement rate limiting on plugin endpoints to slow down potential exploitation attempts
• Regularly audit plugin configurations and access control settings for unauthorized modifications

How to Mitigate CVE-2026-24606

Immediate Actions Required

• Update the Bayarcash WooCommerce plugin to a patched version beyond 4.3.11 when available
• Review WordPress user roles and capabilities to ensure principle of least privilege
• Audit recent access logs for signs of exploitation attempts
• Consider temporarily disabling the plugin until a patch is available if sensitive data is at risk

Patch Information

Organizations using the Bayarcash WooCommerce plugin should check for updates through the WordPress plugin repository or contact the vendor (Web Impian) directly for patched versions. Monitor the Patchstack Vulnerability Report for updates on patch availability.

Workarounds

• Implement a Web Application Firewall (WAF) with rules to restrict access to sensitive plugin endpoints
• Use WordPress security plugins to add additional authorization layers to AJAX handlers
• Restrict access to WordPress admin and plugin functionality through IP whitelisting where feasible
• Consider using WordPress capability checks at the theme or custom plugin level to add defensive authorization checks

# Configuration example - Restrict access to plugin AJAX endpoints via .htaccess
# Add to WordPress .htaccess file to limit access to admin-ajax.php

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php$ [NC]
RewriteCond %{QUERY_STRING} action=bayarcash [NC]
RewriteCond %{HTTP:X-Requested-With} !XMLHttpRequest
RewriteRule .* - [F,L]
</IfModule>