This vulnerability involves an authorization bypass through user-controlled keys in the wpdevart Booking calendar, Appointment Booking System plugin, specifically versions up to 3.2.36. The issue is an unauthenticated insecure direct object reference (IDOR), which allows attackers without authentication to access or manipulate objects they should not be authorized to. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, no confidentiality impact, limited integrity impact, and high availability impact.

An attacker can exploit this vulnerability to bypass authorization controls, potentially modifying data or causing denial of service conditions. The impact affects the integrity and availability of the affected system but does not compromise confidentiality. Since the vulnerability is exploitable without authentication, it poses a risk to any deployment of the affected plugin versions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or restricting access to the affected plugin to mitigate risk. Monitor vendor communications for updates on patches or official mitigations.