Executive Summary

CVE-2026-27388 is a high-priority Broken Access Control vulnerability in the WordPress DesignThemes Booking Manager Plugin versions up to and including 2.0.

The vulnerability arises from missing authorization, authentication, or nonce token checks within certain plugin functions.

This allows unauthenticated users to perform actions that should be restricted to higher-privileged users.

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Impact Analysis

Exploitation of this vulnerability can allow unauthorized users to perform privileged actions on your website.

This could lead to unauthorized changes, data manipulation, or other malicious activities that compromise the security and integrity of your site.

Since no official patch is available yet, immediate mitigation measures are strongly advised to prevent exploitation.

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Compliance Impact

I don't know

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Detection Guidance

This vulnerability arises from missing authorization, authentication, or nonce token checks within certain plugin functions, allowing unauthenticated users to perform privileged actions.

To detect exploitation attempts on your system or network, you should monitor for unusual or unauthorized access patterns targeting the DesignThemes Booking Manager plugin endpoints.

While no specific detection commands are provided, general approaches include:

• Review web server access logs for suspicious requests to plugin-related URLs.
• Use tools like grep or similar to search logs for requests without proper authentication tokens or nonce parameters.
• Implement web application firewall (WAF) rules to detect and block unauthorized access attempts.

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Mitigation Strategies

[{'type': 'paragraph', 'content': 'Since no official patch is available as of the publication date, immediate mitigation involves applying the Patchstack mitigation rule designed to block exploitation attempts.'}, {'type': 'paragraph', 'content': 'Users are strongly advised to implement these mitigation measures to protect their websites from potential exploitation.'}, {'type': 'paragraph', 'content': 'Additional recommended steps include:'}, {'type': 'list_item', 'content': "Restrict access to the affected plugin's administrative functions to trusted users only."}, {'type': 'list_item', 'content': 'Monitor and audit access logs regularly for suspicious activity.'}, {'type': 'list_item', 'content': 'Consider disabling or removing the plugin temporarily if mitigation is not feasible.'}] [1]

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