CVE-2024-1689: WooCommerce Tools Auth Bypass Vulnerability

CVE-2024-1689 Overview

CVE-2024-1689 is a missing authorization vulnerability [CWE-862] in the WooCommerce Tools plugin for WordPress, developed by Themefarmer. The flaw affects all versions up to and including 1.2.9. The woocommerce_tool_toggle_module() function lacks a capability check, allowing authenticated users with subscriber-level access or higher to deactivate arbitrary plugin modules. This creates an integrity impact on affected WordPress installations by enabling low-privileged users to disable functionality intended for administrative control only.

Critical Impact

Authenticated attackers with subscriber-level access can deactivate arbitrary modules of the WooCommerce Tools plugin, disrupting site functionality.

Affected Products

• Themefarmer WooCommerce Tools plugin for WordPress, all versions through 1.2.9
• WordPress sites running the woo-tools plugin with subscriber registration enabled
• E-commerce deployments relying on WooCommerce Tools modules for site functionality

Discovery Timeline

• 2024-06-07 - CVE-2024-1689 published to the National Vulnerability Database (NVD)
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-1689

Vulnerability Analysis

The vulnerability resides in the woocommerce_tool_toggle_module() function within the plugin's admin initialization code (admin/admin-init.php). This function handles module activation and deactivation requests but does not verify whether the requesting user possesses the appropriate WordPress capabilities. As a result, any authenticated user, including those holding the low-privileged subscriber role, can invoke the function to toggle plugin modules off.

Because the attack requires only network access and low privileges without user interaction, exploitation is straightforward once a user account exists. The impact is limited to integrity of plugin configuration, as the flaw does not directly expose data or execute arbitrary code. However, disabling modules can degrade site functionality, break e-commerce workflows, or disable security-related plugin features.

Root Cause

The root cause is the absence of a WordPress capability check, such as current_user_can( 'manage_options' ), and a nonce verification within the woocommerce_tool_toggle_module() handler. WordPress AJAX and admin endpoints require explicit authorization checks; omitting them allows any logged-in user to invoke privileged actions. The plugin exposes the toggle endpoint to all authenticated users through the standard admin request handler.

Attack Vector

An attacker first obtains a WordPress account with subscriber-level access, which many WordPress sites allow through open registration. The attacker then sends a crafted HTTP request to the plugin's admin action endpoint, targeting the module toggle handler. Because the function does not validate the user's role, the request succeeds and deactivates the specified module. Repeated requests can disable multiple modules across the plugin.

No verified public exploit code is available. Refer to the Wordfence Vulnerability Report and the WordPress Plugin Code Review for technical details on the affected function.

Detection Methods for CVE-2024-1689

Indicators of Compromise

• Unexpected WooCommerce Tools module state changes recorded in WordPress option tables or plugin logs
• HTTP POST or GET requests to admin-ajax.php or admin-post handlers invoking the woocommerce_tool_toggle_module action from non-administrator sessions
• Sudden loss of plugin functionality reported by site administrators without corresponding administrative activity
• Subscriber-role accounts accessing WordPress admin endpoints they would not normally use

Detection Strategies

• Review WordPress access logs for requests targeting the toggle handler originating from low-privileged authenticated sessions
• Enable WordPress audit logging plugins to capture plugin configuration changes and correlate them against user roles
• Monitor the woo-tools plugin options in the database for unauthorized state transitions between requests

Monitoring Recommendations

• Alert on any non-administrator user issuing admin-action requests to WordPress plugin endpoints
• Track plugin module state changes and compare against a baseline of expected administrator activity
• Correlate authentication events with subsequent admin-endpoint access to identify subscriber accounts performing privileged actions

How to Mitigate CVE-2024-1689

Immediate Actions Required

• Update the WooCommerce Tools plugin to a version later than 1.2.9 once a patched release is available from Themefarmer
• Audit existing user accounts and remove or downgrade any unnecessary subscriber-level accounts
• Disable open user registration on WordPress sites that do not require it by unchecking the "Anyone can register" setting
• Review the Woo Tools Changeset Log for vendor commits addressing the missing capability check

Patch Information

Themefarmer addressed the missing authorization issue through a plugin changeset referenced in the Woo Tools Changeset Log. Administrators should apply the latest available plugin update through the WordPress admin dashboard or by downloading the current release from the WordPress plugin repository. Verify the installed version is greater than 1.2.9 after upgrading.

Workarounds

• Uninstall the WooCommerce Tools plugin if it is not essential to site operations until a patched version is confirmed installed
• Restrict access to /wp-admin/admin-ajax.php and admin-post endpoints for subscriber roles using a Web Application Firewall (WAF) rule
• Apply a virtual patch through a security plugin that enforces capability checks on the woocommerce_tool_toggle_module action

# Example WAF rule concept to block subscriber-role toggle requests
# Replace with syntax appropriate for your WAF platform
SecRule REQUEST_URI "@contains admin-ajax.php" \
  "chain,deny,status:403,id:1000001,msg:'Block WooCommerce Tools toggle'"
SecRule ARGS:action "@streq woocommerce_tool_toggle_module"