CVE-2025-39449: JetWooBuilder Auth Bypass Vulnerability

CVE-2025-39449 Overview

CVE-2025-39449 is a Missing Authorization vulnerability affecting the Crocoblock JetWooBuilder WordPress plugin. This security flaw allows attackers to access functionality that is not properly constrained by Access Control Lists (ACLs), potentially enabling unauthorized actions within WordPress installations using this WooCommerce page builder plugin.

Critical Impact

Unauthorized users may be able to access restricted plugin functionality, bypassing intended access controls and potentially manipulating WooCommerce store data or plugin settings.

Affected Products

• Crocoblock JetWooBuilder versions up to and including 2.1.18
• WordPress installations with the jet-woo-builder plugin active
• WooCommerce stores utilizing JetWooBuilder for customization

Discovery Timeline

• May 19, 2025 - CVE-2025-39449 published to NVD
• April 15, 2026 - Last updated in NVD database

Technical Details for CVE-2025-39449

Vulnerability Analysis

This vulnerability is classified under CWE-862 (Missing Authorization), indicating that the JetWooBuilder plugin fails to perform adequate authorization checks before allowing access to certain functionality. In WordPress plugin architecture, proper authorization typically involves verifying user capabilities using functions like current_user_can() before executing privileged operations. When these checks are missing or improperly implemented, users without appropriate permissions can access functionality intended only for administrators or other privileged roles.

The broken access control in JetWooBuilder could allow lower-privileged users or even unauthenticated visitors to interact with plugin features that should be restricted. This type of vulnerability is particularly concerning in e-commerce environments where unauthorized access could impact store operations, product management, or customer data handling.

Root Cause

The root cause is a missing authorization check within the JetWooBuilder plugin's codebase. The plugin does not properly verify that users have the necessary permissions before granting access to certain endpoints or functionality. This represents a failure to implement proper access control mechanisms, which is a common vulnerability pattern in WordPress plugins where AJAX handlers or REST API endpoints lack capability checks.

Attack Vector

An attacker can exploit this vulnerability by directly accessing plugin functionality without proper authentication or authorization. The attack does not require administrative privileges and may be exploitable by authenticated subscribers or potentially unauthenticated users, depending on the specific unprotected endpoints. The attacker would craft requests to the vulnerable endpoints to access restricted features or perform unauthorized actions within the WooCommerce environment.

Since no verified code examples are available for this vulnerability, the specific exploitation technique involves identifying unprotected AJAX actions or REST API endpoints within the JetWooBuilder plugin and sending crafted requests that bypass the missing authorization checks. For detailed technical analysis, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-39449

Indicators of Compromise

• Unusual activity in WordPress admin logs related to JetWooBuilder functionality from non-admin users
• Unexpected modifications to WooCommerce product templates or layouts
• AJAX requests to JetWooBuilder endpoints from users without appropriate permissions
• Access log entries showing requests to jet-woo-builder related endpoints from unexpected sources

Detection Strategies

• Monitor WordPress admin actions and filter for JetWooBuilder-related operations performed by non-privileged users
• Implement Web Application Firewall (WAF) rules to detect unauthorized access attempts to JetWooBuilder AJAX endpoints
• Review PHP error logs for authorization-related exceptions or unexpected access patterns
• Use security plugins to audit user capability changes and privilege escalation attempts

Monitoring Recommendations

• Enable verbose logging for WordPress plugin activity, particularly for WooCommerce-related plugins
• Configure alerts for AJAX requests to /wp-admin/admin-ajax.php with JetWooBuilder action parameters from unauthorized roles
• Regularly audit user accounts for unexpected privilege assignments
• Monitor file integrity for changes to JetWooBuilder plugin files

How to Mitigate CVE-2025-39449

Immediate Actions Required

• Update the JetWooBuilder plugin to a version newer than 2.1.18 if a patched version is available
• Review and restrict user roles and capabilities within WordPress to minimize potential impact
• Implement additional access controls at the web server or WAF level for sensitive plugin endpoints
• Audit existing user accounts for any signs of unauthorized access or privilege abuse

Patch Information

The vulnerability affects JetWooBuilder versions through 2.1.18. Site administrators should check for updates from Crocoblock and apply any available patches immediately. Monitor the official Crocoblock website and WordPress plugin repository for security updates. Additional details can be found in the Patchstack vulnerability database entry.

Workarounds

• Temporarily disable the JetWooBuilder plugin if an update is not immediately available and the functionality is not critical
• Implement server-level access restrictions to block unauthorized requests to JetWooBuilder endpoints
• Use a WordPress security plugin to add additional authorization layers
• Restrict access to the WordPress admin area to trusted IP addresses if feasible

# Example: Block unauthorized AJAX requests to JetWooBuilder in .htaccess
# Add to WordPress root .htaccess file
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php
RewriteCond %{QUERY_STRING} action=jet[_-]woo [NC]
RewriteCond %{HTTP_COOKIE} !wordpress_logged_in [NC]
RewriteRule .* - [F,L]
</IfModule>