CVE-2026-110226 in QloApps
Summary
by MITRE • 10/13/2026
QloApps through 1.7.0 contains a broken access control vulnerability that allows hotel-restricted back-office employees to create room types under unassigned hotels by supplying an arbitrary id_hotel. Attackers can enumerate all hotels via the unfiltered room type form selector and post foreign hotel IDs to AdminProductsController, creating rooms and inventory under other hotels.
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Analysis
by VulDB Data Team • 10/13/2026
The vulnerability identified in QloApps versions through 1.7.0 represents a critical failure in server-side access control mechanisms, specifically within the administrative interface used for managing hotel properties and room inventories. This flaw stems from an insufficient validation of resource ownership during API requests processed by the AdminProductsController. In a properly secured application architecture, any action that modifies or creates data associated with a specific entity must verify that the authenticated user has explicit permission to act upon that particular instance. However, in this implementation, the backend logic relies heavily on client-supplied parameters without adequately cross-referencing them against the permissions scope of the currently logged-in session. This architectural oversight allows an attacker who possesses valid credentials for a hotel-restricted back-office employee account to bypass intended isolation boundaries between different hotels managed within the same multi-tenant or single-instance deployment environment.
From a technical perspective, the exploitation vector involves manipulating the id_hotel parameter when interacting with room type creation endpoints. The application fails to sanitize this input against the user's assigned context, effectively treating any provided hotel identifier as valid regardless of whether it belongs to the employee’s authorized domain. This lack of server-side authorization checks enables direct object reference manipulation, where an attacker can supply arbitrary identifiers for hotels they do not own or manage. By doing so, the system creates new room types and associated inventory records under these foreign hotel profiles. The vulnerability is further exacerbated by the presence of unfiltered form selectors in the user interface, which allow attackers to enumerate all existing hotel IDs within the system simply by observing available options during normal interaction with the application’s administrative panels.
The operational impact of this broken access control is significant and multifaceted. First, it compromises data integrity by allowing unauthorized entities to inject false inventory levels or room configurations into other hotels' records, potentially leading to overbooking scenarios or financial discrepancies if these systems are integrated with booking engines. Second, the ability to enumerate all hotel IDs exposes sensitive business intelligence regarding the scale of operations and the specific identifiers used internally, which can facilitate further targeted attacks against higher-privilege accounts associated with those enumerated entities. In a multi-hotel management context, this breach undermines the fundamental principle of tenant isolation, potentially allowing one client’s employee to disrupt or manipulate another client’s operational data entirely.
This vulnerability aligns closely with CWE-284, which describes Improper Access Control, and specifically maps to MITRE ATT&CK technique T1078, Valid Accounts, as it leverages legitimate but misused credentials to perform unauthorized actions. It also reflects aspects of CWE-639, Authorization Bypass Through User-Controlled Key, where the primary key used for authorization is directly influenced by user input without adequate verification. To mitigate this risk, developers must implement strict server-side validation that verifies the relationship between the authenticated user’s session and the target resource identifier before processing any write operations. This includes enforcing role-based access control checks at every API endpoint level rather than relying solely on client-side restrictions or UI-level permissions. Additionally, implementing rate limiting and audit logging for administrative actions can help detect anomalous patterns of hotel ID enumeration and unauthorized data creation attempts in real-time.