CVE-2026-111688 in XBoot
Summary
by MITRE • 10/16/2026
Exrick XBoot through 3.3.4 contains an authorization bypass vulnerability that allows authenticated users to evade role data-scope restrictions by sending openDataFilter=false. Attackers can append this parameter to the department getByParentId or search endpoints to retrieve the entire organization's department tree and names outside their assigned scope.
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Analysis
by VulDB Data Team • 10/16/2026
The identified security flaw resides within Exrick XBoot, specifically in versions up through 3.3.4, where a critical authorization bypass vulnerability allows authenticated users to circumvent role-based data-scope restrictions. This issue stems from an improper implementation of access control mechanisms that fail to adequately validate the scope of user permissions when processing specific API requests. The core technical deficiency lies in how the application handles the openDataFilter parameter during department retrieval operations. When this parameter is explicitly set to false, the backend logic bypasses the standard filtering routines designed to restrict data visibility based on the authenticated user's assigned role and organizational hierarchy. This design oversight effectively neutralizes the intended security controls that are supposed to limit access to sensitive organizational structures.
From a technical perspective, the vulnerability manifests primarily through two specific endpoints: getByParentId and search functions related to departmental data. These endpoints are designed to return hierarchical information about departments within an organization, typically restricted by the user's role scope to prevent unauthorized personnel from viewing the entire corporate structure. However, because the application does not enforce server-side validation of this parameter against the user’s actual permissions, it allows any authenticated actor to manipulate the request payload. By appending openDataFilter=false to these API calls, an attacker can force the system to return unrestricted data sets rather than filtered results aligned with their role. This represents a classic case of insecure direct object references combined with broken access control, where the application trusts client-supplied input without verifying its legitimacy against established security policies.
The operational impact of this vulnerability is significant for organizations relying on XBoot for internal management and hierarchical oversight. An attacker who gains valid authentication credentials can exploit this flaw to enumerate the entire organization’s department tree and retrieve names outside their assigned scope. This capability facilitates reconnaissance activities that are typically restricted, allowing malicious actors or insider threats to map out the organizational structure with precision. Such information disclosure is particularly dangerous as it provides a clear roadmap of internal divisions, potential targets for further attacks, and insights into reporting lines that could aid in social engineering campaigns or privilege escalation attempts. The exposure of sensitive personnel data associated with these departments may also lead to compliance violations regarding privacy regulations such as GDPR or HIPAA, depending on the nature of the stored information.
This vulnerability aligns closely with CWE-284, which describes Improper Access Control, and specifically relates to CWE-639, Authorization Bypass Through User-Controlled Key. In terms of offensive security frameworks, this behavior corresponds to MITRE ATT&CK technique T1078, Valid Accounts, as it leverages legitimate credentials to access restricted resources, and potentially T1592, Gather Victim Host Information, by enumerating organizational structures. To mitigate this risk, developers must implement strict server-side validation for all input parameters that influence data filtering logic. The openDataFilter parameter should either be removed entirely if not essential or enforced with rigorous checks ensuring it cannot override role-based permissions regardless of client input. Additionally, implementing comprehensive logging and monitoring for anomalous access patterns to department endpoints can help detect exploitation attempts in real-time. Regular security audits focusing on authorization logic across all API endpoints are recommended to ensure that data-scope restrictions remain robust against manipulation.