CVE-2025-49265: WooCommerce Membership Auth Bypass Flaw

CVE-2025-49265 Overview

A Missing Authorization vulnerability has been identified in the WP Swings Membership For WooCommerce plugin (membership-for-woocommerce). This broken access control flaw allows unauthorized users to access functionality that is not properly constrained by Access Control Lists (ACLs), potentially exposing sensitive membership data and restricted operations to unauthenticated attackers.

Critical Impact

Unauthenticated attackers can bypass authorization controls and access protected functionality within the Membership For WooCommerce plugin, potentially leading to unauthorized data exposure and privilege abuse.

Affected Products

• WP Swings Membership For WooCommerce versions through 2.8.1
• WordPress installations using the membership-for-woocommerce plugin
• WooCommerce-based e-commerce sites with membership functionality enabled

Discovery Timeline

• 2025-06-09 - CVE-2025-49265 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-49265

Vulnerability Analysis

This vulnerability is classified under CWE-862 (Missing Authorization), indicating that the affected plugin fails to perform proper authorization checks before granting access to sensitive functionality. The flaw enables network-based attackers to interact with plugin features without requiring authentication or proper privilege verification.

The vulnerability allows attackers to access functionality that should be restricted to authorized users only. Since no user interaction is required and the attack can be executed remotely over the network, the potential for exploitation against publicly accessible WordPress sites is significant. The primary impact is on confidentiality, as attackers may be able to extract sensitive membership information, user data, or configuration details that should be protected by access controls.

Root Cause

The root cause of this vulnerability lies in the absence of proper authorization checks within the Membership For WooCommerce plugin. Specific AJAX endpoints or REST API routes likely fail to verify that the requesting user has appropriate permissions before processing requests. This is a common vulnerability pattern in WordPress plugins where developers implement functionality without properly leveraging WordPress's capability and nonce verification systems.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can craft malicious HTTP requests to vulnerable plugin endpoints and bypass the intended access control mechanisms. This allows unauthorized access to functionality that should be restricted to administrators, shop managers, or authenticated members only.

The vulnerability can be exploited by:

1. Identifying exposed endpoints within the membership-for-woocommerce plugin
2. Sending crafted requests directly to these endpoints without authentication
3. Accessing restricted membership data or performing unauthorized operations

For technical details on the specific vulnerable endpoints and exploitation methodology, refer to the Patchstack WordPress Vulnerability Advisory.

Detection Methods for CVE-2025-49265

Indicators of Compromise

• Unusual access patterns to WordPress AJAX endpoints (/wp-admin/admin-ajax.php) with membership-related actions
• Unexpected API requests to membership-for-woocommerce REST routes from unauthenticated sources
• Access logs showing enumeration attempts or bulk data extraction from membership endpoints
• Database queries related to membership data originating from unauthorized user sessions

Detection Strategies

• Monitor web server access logs for requests to admin-ajax.php containing membership plugin actions without corresponding authentication tokens
• Implement Web Application Firewall (WAF) rules to detect and block suspicious request patterns targeting known vulnerable endpoints
• Deploy WordPress security plugins that provide real-time monitoring and alerting for unauthorized access attempts
• Review WordPress audit logs for unexpected membership data access or configuration changes

Monitoring Recommendations

• Enable detailed logging for all AJAX and REST API requests within WordPress
• Configure alerts for multiple failed authorization attempts or anomalous access patterns
• Periodically review user activity logs for signs of privilege abuse or data exfiltration
• Implement rate limiting on sensitive plugin endpoints to mitigate enumeration attacks

How to Mitigate CVE-2025-49265

Immediate Actions Required

• Update the Membership For WooCommerce plugin to a version newer than 2.8.1 that addresses this vulnerability
• Audit access logs for any signs of exploitation prior to patching
• Temporarily disable the plugin if an immediate update is not possible and membership functionality is not critical
• Review and restrict membership data that may have been exposed to unauthorized parties

Patch Information

WP Swings has been notified of this vulnerability. Site administrators should check the WordPress plugin repository for updated versions of the Membership For WooCommerce plugin that include security fixes for this broken access control issue. The vulnerability affects versions through 2.8.1, so upgrading to any version released after the security fix is essential.

For detailed patch information and version history, consult the Patchstack WordPress Vulnerability Advisory.

Workarounds

• Implement additional access controls at the web server level using .htaccess rules or nginx configuration to restrict access to plugin endpoints
• Deploy a Web Application Firewall (WAF) with rules specifically designed to block unauthorized access to WordPress plugin endpoints
• Restrict admin-ajax.php access to authenticated users where feasible through server configuration
• Consider using a WordPress security plugin that provides virtual patching capabilities while waiting for an official fix

# Apache .htaccess example - Restrict access to admin-ajax.php for specific actions
# Add to WordPress root .htaccess file
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php$
RewriteCond %{QUERY_STRING} action=wps_membership [NC]
RewriteCond %{HTTP_COOKIE} !wordpress_logged_in
RewriteRule .* - [F,L]
</IfModule>