CVE-2026-116388 in Amelia Plugin
Summary
by MITRE • 10/26/2026
Missing Authorization vulnerability in TMS Amelia ameliabooking allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Amelia: from n/a through 2.4.10.
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Analysis
by VulDB Data Team • 10/26/2026
The identified security flaw within the Travel Management System known as Amelia, specifically affecting versions ranging from non-existent initial releases up to version 2.4.10, represents a critical failure in access control mechanisms. This vulnerability is classified under the category of Missing Authorization, which corresponds directly with Common Weakness Enumeration identifier CWE-862. The core technical issue lies in the application's inability to properly verify whether an authenticated user possesses the necessary privileges to perform specific actions or access particular resources. In a well-designed system, every request for sensitive operations must be validated against the user's assigned role and permissions before execution. However, in this instance, the server-side logic fails to enforce these checks adequately, allowing any authenticated actor to bypass intended restrictions simply by manipulating HTTP requests or interacting with endpoints that should require elevated privileges.
This type of vulnerability is often associated with Broken Access Control, a category frequently highlighted in the OWASP Top Ten as one of the most prevalent and dangerous web application security risks. From an offensive security perspective, this flaw aligns with MITRE ATT&CK techniques related to Privilege Escalation or Unauthorized Access via API endpoints. An attacker who has obtained valid credentials for even a low-privileged account can exploit this misconfiguration to perform administrative tasks, modify system configurations, access other users' private data, or execute destructive operations that are strictly reserved for administrators. The absence of proper server-side validation means that client-side security measures, such as hiding buttons in the user interface, provide no real protection against a determined adversary using tools like Burp Suite or curl to send direct requests to vulnerable endpoints.
The operational impact of this vulnerability is severe and multifaceted. For organizations relying on Amelia for booking management, customer data handling, or internal workflow automation, the breach can lead to significant financial loss due to fraudulent bookings or unauthorized changes to pricing structures. Furthermore, there is a substantial risk to data privacy and regulatory compliance. If sensitive personal information belonging to customers or employees is accessible through these improperly secured endpoints, it could result in violations of regulations such as GDPR or CCPA, leading to legal penalties and reputational damage. The ability for an attacker to escalate privileges effectively compromises the integrity of the entire system, potentially allowing them to install backdoors, exfiltrate databases, or disrupt service availability by altering critical configuration settings.
Mitigation strategies must focus on immediate remediation through software updates and rigorous code review practices. The primary recommendation is to upgrade the Amelia installation to a version later than 2.4.10 where this authorization logic has been corrected by the vendor. If an immediate update is not feasible due to operational constraints, temporary mitigations should be implemented at the network or application layer. This includes deploying Web Application Firewalls configured with rules that detect and block anomalous access patterns indicative of privilege escalation attempts. Additionally, developers must conduct a thorough audit of all API endpoints and administrative functions within the current version to ensure that every action is explicitly checked against the user's role permissions before execution. Implementing strict input validation and enforcing principle of least privilege across all system components will help reduce the attack surface until the permanent patch can be applied.