CVE-2026-24372: WooCommerce Auth Bypass Vulnerability

CVE-2026-24372 Overview

CVE-2026-24372 is an Authentication Bypass by Spoofing vulnerability affecting the Subscriptions for WooCommerce plugin developed by WP Swings. This vulnerability allows attackers to manipulate input data to bypass authentication mechanisms, potentially gaining unauthorized access to subscription management functions within WooCommerce-powered e-commerce sites.

The vulnerability stems from improper verification of user-supplied identity claims (CWE-290), enabling malicious actors to spoof authentication credentials through carefully crafted input data manipulation. This represents a significant security risk for WordPress sites utilizing this popular subscription management plugin.

Critical Impact

Attackers can bypass authentication controls to access sensitive subscription data without proper credentials, potentially compromising customer information and subscription management capabilities.

Affected Products

• Subscriptions for WooCommerce plugin versions through 1.8.10
• WordPress sites running vulnerable versions of the WP Swings plugin
• WooCommerce stores with subscription functionality enabled

Discovery Timeline

• 2026-03-25 - CVE-2026-24372 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2026-24372

Vulnerability Analysis

This authentication bypass vulnerability exists within the Subscriptions for WooCommerce plugin's authentication handling mechanisms. The flaw allows attackers to manipulate input data in a way that circumvents the normal authentication verification process.

The vulnerability is classified under CWE-290 (Authentication Bypass by Spoofing), which occurs when an application does not properly verify that a request came from an authenticated source. In this case, the plugin fails to adequately validate user identity claims, allowing attackers to forge authentication tokens or manipulate request parameters to gain unauthorized access.

The network-based attack vector requires no prior authentication or user interaction, making it particularly dangerous for publicly accessible WordPress e-commerce sites. An attacker can exploit this vulnerability remotely to access confidential subscription data.

Root Cause

The root cause of CVE-2026-24372 lies in insufficient validation of authentication-related input data within the Subscriptions for WooCommerce plugin. The plugin does not properly verify the authenticity of user-supplied credentials or session information before granting access to protected resources.

This inadequate input validation allows attackers to craft malicious requests that appear to originate from authenticated users, effectively spoofing legitimate authentication without possessing valid credentials.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no privileges or user interaction. An attacker can exploit this vulnerability by:

1. Identifying a WordPress site running a vulnerable version of Subscriptions for WooCommerce
2. Crafting malicious HTTP requests with manipulated authentication parameters
3. Sending these requests to bypass authentication controls
4. Gaining unauthorized access to subscription data and management functions

The vulnerability allows for confidentiality breaches, enabling attackers to access sensitive subscription and customer information without proper authorization.

Detection Methods for CVE-2026-24372

Indicators of Compromise

• Unusual authentication patterns or access to subscription management endpoints without valid session tokens
• HTTP requests to WooCommerce subscription endpoints containing malformed or suspicious authentication parameters
• Access logs showing repeated requests to subscription-related URLs from unknown or suspicious IP addresses
• Unexpected changes to subscription records or customer data without corresponding administrative actions

Detection Strategies

• Monitor WordPress access logs for anomalous requests to /wp-json/ or subscription-related endpoints
• Implement Web Application Firewall (WAF) rules to detect authentication bypass attempts targeting WooCommerce plugins
• Deploy intrusion detection signatures for CWE-290 authentication spoofing attack patterns
• Review audit logs for unauthorized access to subscription management functions

Monitoring Recommendations

• Enable comprehensive logging for the Subscriptions for WooCommerce plugin and WooCommerce core
• Set up alerts for failed authentication attempts followed by successful access to protected resources
• Monitor for bulk data access or enumeration attempts on subscription endpoints
• Implement real-time monitoring of WordPress admin panel and API access patterns

How to Mitigate CVE-2026-24372

Immediate Actions Required

• Update Subscriptions for WooCommerce plugin to a version newer than 1.8.10 immediately
• Review subscription access logs for any signs of unauthorized access
• Audit user accounts and subscription data for unexpected modifications
• Implement additional authentication controls such as IP whitelisting for administrative functions
• Consider temporarily disabling the plugin if an update is not immediately available

Patch Information

WP Swings has been notified of this vulnerability. Site administrators should update to the latest version of Subscriptions for WooCommerce as soon as a patched version becomes available. Monitor the Patchstack WordPress Vulnerability Report for updates on patch availability and remediation guidance.

Workarounds

• Implement a Web Application Firewall (WAF) with rules to block suspicious authentication patterns
• Restrict access to WooCommerce REST API endpoints using IP-based access controls
• Enable WordPress two-factor authentication for all administrative accounts
• Deploy additional server-side authentication validation before processing subscription requests
• Consider using security plugins that provide additional authentication hardening for WooCommerce

# Example: Restrict access to WooCommerce REST API endpoints in .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-json/wc/v[0-9]+/subscriptions [NC]
RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.100$
RewriteRule .* - [F,L]
</IfModule>