CVE-2026-105836 in QloApps
Summary
by MITRE • 10/06/2026
QloApps through 1.7.0 contains an authorization bypass vulnerability in AdminProductsController::ajaxProcessBulkUpdateRooms that allows hotel-restricted back-office employees to modify rooms of other hotels. Attackers can submit foreign room IDs in the id_rooms parameter to change status, floor, comments, or inactive dates, disrupting availability and bookings.
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified in QloApps versions through 1.7.0 represents a critical authorization bypass within the administrative interface of the hotel management platform. Specifically, this flaw resides in the ajaxProcessBulkUpdateRooms method of the AdminProductsController class. The core technical deficiency is an insufficient check on user permissions relative to the data being modified. While the application correctly restricts back-office employees from accessing hotels other than their own for general browsing and viewing purposes, it fails to enforce these same boundaries when processing bulk update requests via AJAX endpoints. This architectural inconsistency allows a malicious actor with legitimate but limited credentials—specifically those assigned to manage only one specific hotel—to interact directly with the API endpoint using HTTP POST or GET requests that include identifiers belonging to different hotels within the system.
From an offensive security perspective, this vulnerability is classified under CWE-285: Improper Authorization. The attacker exploits the lack of server-side validation by submitting a foreign room ID in the id_rooms parameter during bulk update operations. By manipulating this input field, the adversary can target rooms that are logically isolated from their authorized scope. This bypass mechanism relies on the application trusting client-supplied identifiers without cross-referencing them against the authenticated user’s hotel assignment records. Consequently, an attacker does not need to compromise administrative accounts or exploit complex injection flaws; they simply need valid credentials for any single hotel and a basic understanding of how to construct API requests with altered parameters.
The operational impact of this vulnerability is severe due to its direct effect on business continuity and revenue generation in the hospitality sector. Once authorized, an attacker can modify critical attributes of rooms belonging to other hotels, including changing their availability status, altering floor assignments, updating internal comments, or setting inactive dates that remove them from booking systems. This capability enables a range of malicious activities such as disrupting competitor operations by marking available rooms as unavailable, thereby causing lost bookings and customer dissatisfaction. Alternatively, an attacker could manipulate room statuses to create confusion in inventory management, potentially leading to overbooking scenarios where multiple customers are assigned the same physical space. Such disruptions can result in significant financial loss for affected hotels and damage their reputation among guests who experience booking failures or check-in issues due to inaccurate system data.
In terms of threat modeling and detection, this activity aligns with MITRE ATT&CK techniques related to privilege escalation and lateral movement within a multi-tenant SaaS environment. Although the attacker remains at a lower privilege level than super-administrators, they effectively achieve unauthorized access to resources outside their designated domain. Detection mechanisms should focus on monitoring AJAX requests that involve bulk updates for anomalies in room IDs relative to user profiles. Security information and event management (SIEM) systems can be configured to flag patterns where a single user account triggers modification events across multiple distinct hotel entities within short timeframes, indicating potential exploitation of this authorization bypass.
To mitigate this vulnerability, immediate remediation efforts must focus on implementing strict server-side validation for all data manipulation endpoints. The AdminProductsController::ajaxProcessBulkUpdateRooms method should be updated to verify that every room ID included in the id_rooms parameter belongs to a hotel associated with the currently authenticated user’s account. This check must occur before any database updates are executed, ensuring that even if an attacker submits foreign IDs, the system will reject them or process only those within the authorized scope. Additionally, developers should adopt a principle of least privilege by defaulting all API endpoints to deny access unless explicitly permitted for specific resource ownership. Regular security audits and penetration testing focused on multi-tenant isolation are recommended to identify similar flaws in other parts of the application logic that may rely on client-supplied identifiers without adequate verification against user context.