CVE-2026-39652: iGMS Direct Booking Auth Bypass Flaw

CVE-2026-39652 Overview

CVE-2026-39652 is a Missing Authorization vulnerability affecting the iGMS Direct Booking WordPress plugin (igms-direct-booking). This security flaw allows attackers to exploit incorrectly configured access control security levels, potentially gaining unauthorized access to protected functionality or data within affected WordPress installations.

Critical Impact

Unauthorized users may access restricted plugin functionality due to missing authorization checks, potentially exposing sensitive booking data or enabling manipulation of direct booking features.

Affected Products

• iGMS Direct Booking WordPress Plugin versions through 1.3
• WordPress installations using the igms-direct-booking plugin
• Websites utilizing iGMS Direct Booking for property management integrations

Discovery Timeline

• 2026-04-08 - CVE-2026-39652 published to NVD
• 2026-04-09 - Last updated in NVD database

Technical Details for CVE-2026-39652

Vulnerability Analysis

This vulnerability stems from a Broken Access Control weakness (CWE-862: Missing Authorization) in the iGMS Direct Booking plugin. The plugin fails to properly verify user authorization before allowing access to certain functionality, enabling unauthenticated or low-privileged users to interact with features that should be restricted.

The flaw allows network-based exploitation without requiring user interaction or special privileges. While the impact is limited to confidentiality exposure with no direct integrity or availability implications, attackers could potentially access sensitive booking information or configuration data that should remain protected.

Root Cause

The root cause is a Missing Authorization check (CWE-862) within the plugin's access control implementation. The iGMS Direct Booking plugin does not adequately verify whether a user has the appropriate permissions before processing certain requests. This oversight in the security architecture allows unauthorized parties to bypass intended access restrictions.

Attack Vector

The vulnerability can be exploited remotely over the network. An attacker does not need authentication or user interaction to exploit this flaw. The attack complexity is low, making it accessible to threat actors with minimal technical sophistication. Successful exploitation could result in unauthorized disclosure of information, though the impact is constrained to low-severity data exposure.

The vulnerability specifically targets incorrectly configured access control security levels within the plugin, allowing attackers to access functionality or data without proper authorization verification.

Detection Methods for CVE-2026-39652

Indicators of Compromise

• Unusual access patterns to iGMS Direct Booking plugin endpoints from unauthenticated users
• Unexpected API calls or requests to booking-related functionality without valid session tokens
• Access logs showing requests to plugin-specific URLs from external IP addresses without corresponding authentication events

Detection Strategies

• Monitor WordPress access logs for requests to /wp-content/plugins/igms-direct-booking/ paths without authentication
• Implement Web Application Firewall (WAF) rules to detect and alert on suspicious access patterns to booking plugin endpoints
• Review audit logs for unauthorized access attempts to plugin administrative functions

Monitoring Recommendations

• Enable detailed WordPress access logging and review for anomalous plugin access patterns
• Configure intrusion detection systems to alert on potential broken access control exploitation attempts
• Regularly audit user access levels and plugin permission configurations

How to Mitigate CVE-2026-39652

Immediate Actions Required

• Update the iGMS Direct Booking plugin to a patched version when available from the vendor
• Review and restrict access to the plugin's functionality using WordPress capability checks
• Consider temporarily disabling the plugin if it is not critical to operations until a patch is released

Patch Information

Affected versions include iGMS Direct Booking through version 1.3. Users should monitor the Patchstack WordPress Vulnerability Database for updated patch information and vendor guidance.

Workarounds

• Implement additional access controls at the web server or WAF level to restrict access to plugin endpoints
• Use WordPress security plugins to enforce capability checks on sensitive plugin functionality
• Restrict network access to the WordPress admin area and plugin endpoints using IP allowlisting

# Example: Restrict access to plugin directory via .htaccess
<Directory "/var/www/html/wp-content/plugins/igms-direct-booking">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Directory>