CVE-2026-57746 in Booked Plugin
Summary
by MITRE • 07/02/2026
Subscriber Broken Access Control in Booked <= 3.0.0 versions.
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Analysis
by VulDB Data Team • 07/02/2026
The vulnerability identified as broken access control in Booked versions up to 3.0.0 represents a critical security flaw that allows unauthorized users to gain elevated privileges and access restricted functionality within the application. This issue stems from inadequate authorization checks that fail to properly validate user permissions before granting access to administrative or sensitive operations. The vulnerability exists due to insufficient input validation and improper session management mechanisms that do not adequately verify whether a user possesses the necessary rights to perform specific actions within the system.
The technical implementation of this access control flaw manifests through several potential vectors where authentication bypasses occur. Attackers can exploit missing authorization checks in API endpoints, administrative interfaces, or specific function calls that should only be accessible to authenticated administrators or users with appropriate privilege levels. The vulnerability typically occurs when the application fails to properly verify user roles or session tokens before executing sensitive operations such as modifying user accounts, accessing reservation data, or managing system configurations. This weakness can be exploited through manipulation of request parameters, session tokens, or direct API calls that bypass normal access control mechanisms.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data breaches, privilege escalation attacks, and complete system compromise. An attacker who successfully exploits this vulnerability could gain administrative privileges within the Booked application, allowing them to modify or delete user accounts, access confidential reservation information, manipulate booking schedules, and potentially exfiltrate sensitive data. The scope of impact includes not only individual user privacy but also organizational data integrity and system availability, as attackers could disrupt normal operations through malicious modifications or data destruction.
Mitigation strategies for this vulnerability require immediate implementation of proper authorization controls and comprehensive security reviews of the application's access control mechanisms. Organizations should implement robust role-based access control systems that enforce strict permission checks before allowing any privileged operations to execute. Security patches addressing this specific vulnerability should be applied immediately, with additional measures including input validation, session token management improvements, and regular security testing to identify similar authorization flaws. The implementation of these controls aligns with cybersecurity frameworks such as the CWE-285 (Improper Authorization) classification and represents a fundamental requirement for maintaining system integrity according to industry standards like NIST SP 800-53.
The exploitation of this vulnerability demonstrates the critical importance of implementing defense-in-depth strategies that combine multiple security controls rather than relying on single points of failure. Organizations should establish comprehensive monitoring systems to detect unauthorized access attempts and maintain regular security assessments to identify potential access control weaknesses before they can be exploited by malicious actors. This vulnerability serves as a reminder that even seemingly simple applications require rigorous security testing and proper implementation of authorization mechanisms to prevent attackers from escalating privileges and accessing sensitive system resources through well-known attack vectors that align with the MITRE ATT&CK framework's privilege escalation techniques.