CVE-2026-94231 in TrueBooker Plugin
Summary
by MITRE • 10/19/2026
The TrueBooker WordPress plugin before 1.3.0 does not have authorisation checks in place in some of its functionality, allowing unauthenticated users to create and modify booking services and categories, including their prices.
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Analysis
by VulDB Data Team • 10/19/2026
The vulnerability identified in the TrueBooker WordPress plugin prior to version 1.3.0 represents a critical failure in access control mechanisms within the application's administrative interface. This flaw stems from an absence of proper authorization checks on specific endpoints responsible for managing booking services and categories. In secure web applications, any action that modifies data or configuration settings must verify that the requesting user possesses the necessary privileges to perform such operations. The lack of these checks in TrueBooker allows unauthenticated users, who do not possess valid login credentials or session tokens, to interact directly with these administrative functions. This type of vulnerability is a classic example of broken access control, where the server fails to enforce policy regarding which objects a user can access and what actions they can perform on those objects.
From a technical perspective, this flaw enables unauthenticated attackers to create new booking services and categories or modify existing ones without any form of authentication. This includes the ability to alter critical attributes such as pricing structures for these services. By manipulating prices, an attacker could potentially disrupt business operations by setting incorrect rates, creating fraudulent service entries that mislead customers, or removing essential offerings entirely. The impact extends beyond mere data integrity issues; it compromises the availability and trustworthiness of the booking platform. Since WordPress plugins often handle sensitive customer data and financial transactions through integrated payment gateways, unauthorized modifications to pricing can lead to direct financial loss for both the business owner and its clients if fraudulent bookings are processed based on manipulated prices.
This vulnerability aligns with CWE-284, which describes Improper Access Control, specifically highlighting scenarios where access control decisions are not enforced properly. Furthermore, in the context of the MITRE ATT&CK framework, this behavior corresponds to techniques associated with unauthorized account creation or modification and potentially privilege escalation if the attacker later gains authenticated status through other means. The ability to modify service configurations remotely without authentication is particularly dangerous as it bypasses standard security layers that rely on user identity verification. Attackers can exploit this by sending crafted HTTP requests directly to the plugin's administrative endpoints, effectively taking over aspects of the site's functionality and configuration.
To mitigate this risk, immediate action must be taken by updating the TrueBooker WordPress plugin to version 1.3.0 or later, where these authorization checks have presumably been implemented correctly. Until an update is applied, administrators should consider restricting access to the wp-admin directory using IP whitelisting if feasible, although this is not a complete solution given that some operations might be accessible via AJAX calls from the frontend depending on how the plugin handles requests. Additionally, implementing Web Application Firewalls can help detect and block suspicious patterns of unauthorized API usage or unusual request volumes targeting administrative endpoints. Regular security audits and code reviews focusing on access control logic are essential to prevent similar vulnerabilities in future updates or other plugins used within the WordPress ecosystem. Ensuring that all user inputs are validated and that every state-changing operation requires a valid, authenticated session with appropriate permissions is fundamental to maintaining the integrity of web applications.