CVE-2026-78258 in Booking and Rental Manager Plugin
Summary
by MITRE • 08/24/2026
Unauthenticated Broken Access Control in Booking and Rental Manager <= 2.7.5 versions.
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Analysis
by VulDB Data Team • 08/24/2026
The vulnerability identified within the Booking and Rental Manager plugin for WordPress, specifically affecting versions up to and including 2.7.5, represents a critical failure in access control mechanisms that allows unauthenticated attackers to perform administrative actions without valid credentials or session tokens. This flaw is rooted in improper validation of user privileges during request processing, where the application fails to adequately verify whether the initiating actor possesses the necessary permissions to execute specific management functions. In typical web applications, especially those handling sensitive data like booking records and rental agreements, strict enforcement of role-based access control is paramount to prevent unauthorized modifications or deletions of critical business information.
From a technical perspective, this issue aligns with CWE-284, which describes Improper Access Control, specifically falling under the sub-category of unauthenticated bypasses where security constraints are not enforced before processing user input. The vulnerability likely stems from missing checks on nonce values or session tokens for certain administrative endpoints that should be restricted to users with elevated privileges such as administrators. By exploiting this gap, an attacker can craft malicious HTTP requests targeting these unprotected endpoints, effectively impersonating a legitimate administrator. This type of flaw is often categorized under the MITRE ATT&CK technique T1078, Valid Accounts, although in this specific case, it allows access without any account at all, making it even more severe as it requires no prior compromise of user credentials to initiate an attack.
The operational impact of this vulnerability is significant for organizations relying on this plugin to manage their booking and rental operations. An unauthenticated attacker can potentially modify existing bookings, cancel reservations, or alter pricing structures without detection by the system's normal security logs if logging mechanisms are not robustly configured. Furthermore, depending on how the underlying database queries are constructed, there may be a risk of SQL injection if input sanitization is also lacking in conjunction with this access control failure. The ability to manipulate booking data can lead directly to financial loss through fraudulent cancellations or unauthorized changes to rental agreements, as well as reputational damage due to service disruptions and customer dissatisfaction resulting from lost reservations.
Mitigation strategies must focus on immediate remediation of the codebase alongside broader security hardening practices. The primary recommendation is to upgrade the Booking and Rental Manager plugin to version 2.7.6 or later, where these access control checks have been properly implemented by the developers. Until an update can be applied, temporary mitigations include restricting access to the WordPress admin area via IP whitelisting if feasible, although this may not fully protect public-facing endpoints exposed through REST APIs or AJAX handlers used by the plugin. Additionally, implementing a Web Application Firewall with rules specifically targeting suspicious patterns in booking-related API calls can provide an additional layer of defense against exploitation attempts while monitoring logs for unusual activity indicative of unauthorized access attempts.