CVE-2026-23972: Booking and Rental Manager Auth Bypass

CVE-2026-23972 Overview

CVE-2026-23972 is a Missing Authorization vulnerability affecting the Booking and Rental Manager for WooCommerce WordPress plugin developed by magepeopleteam. This vulnerability allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized modifications to booking and rental data.

The vulnerability stems from broken access control mechanisms within the plugin, where authorization checks are missing or improperly implemented. Authenticated users with low-level privileges can perform actions that should be restricted to administrators or higher-privileged users.

Critical Impact

Authenticated attackers can bypass authorization controls to modify booking and rental data without proper permissions, potentially compromising the integrity of e-commerce operations.

Affected Products

• Booking and Rental Manager for WooCommerce version 2.6.0 and earlier
• WordPress installations using the booking-and-rental-manager-for-woocommerce plugin
• WooCommerce-based e-commerce sites with booking functionality

Discovery Timeline

• 2026-03-25 - CVE CVE-2026-23972 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2026-23972

Vulnerability Analysis

This vulnerability is classified as CWE-862 (Missing Authorization), a common weakness where software fails to perform an authorization check when an actor attempts to access a resource or perform an action. In the context of the Booking and Rental Manager plugin, certain sensitive operations do not verify whether the requesting user has the appropriate permissions to execute them.

The vulnerability is exploitable over the network and requires low-level authentication (such as a subscriber or customer account). Once authenticated, an attacker can leverage the missing authorization checks to modify booking data, alter rental configurations, or access functionality intended only for administrators. The impact is primarily on data integrity, as unauthorized modifications can disrupt business operations and compromise booking records.

Root Cause

The root cause of this vulnerability lies in the plugin's failure to implement proper capability checks before processing sensitive requests. WordPress plugins should validate user capabilities using functions like current_user_can() before allowing actions that modify data or access restricted functionality. The Booking and Rental Manager plugin versions 2.6.0 and earlier do not adequately enforce these authorization checks, allowing authenticated users to bypass intended access controls.

Attack Vector

The attack vector for CVE-2026-23972 is network-based, requiring the attacker to have authenticated access to the WordPress site (low privilege level). The exploitation process involves:

1. An attacker obtains or registers a low-privilege account on the target WordPress site
2. The attacker identifies plugin endpoints or AJAX handlers that lack proper authorization checks
3. By crafting specific requests to these unprotected endpoints, the attacker can perform unauthorized actions
4. These actions may include modifying booking records, changing rental configurations, or accessing restricted administrative functions

Since no verified code examples are available for this vulnerability, attackers would typically analyze the plugin's PHP source code to identify AJAX handlers or REST API endpoints that process requests without verifying user capabilities. See the Patchstack Vulnerability Report for additional technical details.

Detection Methods for CVE-2026-23972

Indicators of Compromise

• Unexpected modifications to booking records or rental configurations without corresponding administrator activity
• Audit log entries showing low-privilege users accessing administrative plugin functions
• Unusual AJAX requests to the booking-and-rental-manager-for-woocommerce plugin endpoints from non-administrator accounts
• Database changes to booking-related tables that don't correlate with legitimate user actions

Detection Strategies

• Monitor WordPress audit logs for suspicious activity related to the Booking and Rental Manager plugin
• Implement web application firewall (WAF) rules to detect unauthorized access patterns to plugin endpoints
• Review server access logs for unusual POST requests to /wp-admin/admin-ajax.php involving plugin-specific actions
• Deploy file integrity monitoring to detect any unauthorized modifications to plugin files

Monitoring Recommendations

• Enable comprehensive WordPress audit logging using security plugins such as WP Activity Log
• Configure alerts for booking data modifications performed by non-administrator users
• Implement real-time monitoring of plugin-related database tables for unauthorized changes
• Regularly review user capability assignments to ensure principle of least privilege

How to Mitigate CVE-2026-23972

Immediate Actions Required

• Update the Booking and Rental Manager for WooCommerce plugin to a patched version (versions after 2.6.0)
• Audit existing booking and rental data for any unauthorized modifications
• Review user accounts for any suspicious activity or unauthorized access attempts
• Temporarily restrict plugin functionality to administrators only if an immediate update is not possible

Patch Information

The vulnerability affects Booking and Rental Manager for WooCommerce versions through 2.6.0. Site administrators should update to the latest available version from the WordPress plugin repository or the vendor's official distribution channels. For detailed patch information, consult the Patchstack Vulnerability Report.

Workarounds

• Restrict plugin access by modifying user capabilities until a patch can be applied
• Implement a web application firewall (WAF) rule to block unauthorized requests to vulnerable endpoints
• Temporarily disable the plugin if booking functionality is not immediately required
• Use WordPress security plugins to add additional authorization layers to AJAX handlers

# Configuration example: Restrict plugin access via .htaccess (temporary mitigation)
# Add to WordPress root .htaccess to limit admin-ajax.php access
<Files admin-ajax.php>
    <RequireAll>
        Require all granted
        # Add IP restrictions for sensitive operations if needed
    </RequireAll>
</Files>

# Alternative: Use wp-config.php to define custom capabilities
# This requires custom plugin development or security plugin configuration