CVE-2025-67574 identifies a missing authorization vulnerability in the wpdevart Booking calendar and Appointment Booking System WordPress plugin, specifically in versions up to 3.2.30. This vulnerability arises due to incorrectly configured access control mechanisms, allowing unauthenticated attackers to bypass authorization checks and access booking calendar functionalities that should be restricted. The vulnerability is remotely exploitable over the network without requiring any privileges or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact primarily concerns confidentiality, as attackers can potentially view booking data or related information without permission, but there is no indication of integrity or availability compromise. The plugin is commonly used by businesses and organizations to manage appointments and bookings on WordPress-powered websites. Although no exploits have been observed in the wild yet, the vulnerability's presence in a widely used plugin poses a risk of unauthorized data disclosure. The lack of available patches at the time of reporting necessitates interim mitigation strategies. This vulnerability highlights the importance of proper authorization checks in web applications, especially those handling sensitive customer or appointment data.

For European organizations, this vulnerability could lead to unauthorized disclosure of booking and appointment data, potentially exposing sensitive customer information or business schedules. This can result in privacy violations, reputational damage, and possible regulatory non-compliance under GDPR if personal data is involved. The impact is limited to confidentiality, with no direct effect on data integrity or system availability. However, unauthorized access to booking data could facilitate further targeted attacks or social engineering campaigns. Organizations relying on the wpdevart Booking calendar plugin for customer-facing appointment management are at risk, especially those in sectors like healthcare, legal services, or consultancy where appointment confidentiality is critical. The medium severity rating reflects the moderate impact and ease of exploitation without authentication. The absence of known exploits in the wild reduces immediate risk but does not eliminate the potential for future attacks.

1. Monitor the wpdevart vendor announcements and apply security patches promptly once released to address CVE-2025-67574. 2. Until patches are available, restrict access to the booking calendar endpoints using web application firewalls (WAFs) or reverse proxies by IP whitelisting or authentication enforcement. 3. Implement strict access control rules at the web server level (e.g., .htaccess or nginx configurations) to limit access to booking management URLs to authorized users only. 4. Conduct an audit of all WordPress plugins and remove or replace those that are no longer maintained or have known vulnerabilities. 5. Regularly review and harden WordPress user roles and permissions to minimize exposure. 6. Employ security plugins that can detect and block unauthorized access attempts. 7. Educate site administrators about the risks of missing authorization and the importance of timely updates. 8. Consider isolating booking systems on separate subdomains or servers with additional security controls to limit lateral movement in case of compromise.