CVE-2026-114393 in Trudesk
Summary
by MITRE • 10/21/2026
Trudesk through 1.2.11 contains an authorization bypass vulnerability that allows any authenticated user to modify tickets outside their groups via PUT /api/v1/tickets/:id and PUT /api/v2/tickets/batch. Attackers can supply arbitrary ticket ObjectIds to change status, subject, group, priority or assignee, or mass-close tickets, since only the default tickets:update role grant is checked.
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified in Trudesk versions through 1.2.11 represents a critical authorization bypass flaw within the application's ticket management subsystem. This security defect allows any authenticated user to perform unauthorized modifications on tickets that fall outside their assigned organizational groups or scopes. The core of the issue lies in how the backend API validates access permissions for specific HTTP endpoints, namely PUT /api/v1/tickets/:id and PUT /api/v2/tickets/batch. Instead of verifying whether the requesting user has explicit permission to modify a particular ticket based on group membership or ownership, the system relies solely on checking if the user possesses the default tickets:update role grant. This coarse-grained access control mechanism fails to enforce fine-grained authorization policies, effectively treating all authenticated users with this generic role as having unrestricted write access across the entire application database for ticket objects.
From a technical perspective, the flaw stems from an incomplete implementation of object-level security checks during API request processing. When a user submits a PUT request to modify a ticket's attributes such as status, subject, group assignment, priority, or assignee, the server accepts arbitrary ObjectIds provided in the payload without validating if those IDs correspond to tickets within the user's authorized scope. This oversight enables attackers to manipulate records belonging to other groups by simply supplying different identifiers in the request body. The vulnerability is particularly severe because it affects both single-ticket updates and batch operations via the v2 API endpoint, allowing for mass modifications or closures of tickets across multiple groups simultaneously. Such behavior violates the principle of least privilege and fails to implement proper horizontal access control mechanisms that restrict users to resources they are explicitly permitted to manage.
The operational impact of this vulnerability is significant, as it compromises the integrity and confidentiality of incident tracking workflows. Attackers can alter ticket statuses to hide malicious activities or create confusion in service desk operations by changing subjects and priorities arbitrarily. More critically, the ability to change group assignments allows an attacker to reassign tickets away from their original owners, potentially disrupting response efforts for critical incidents. The capability to mass-close tickets via the batch endpoint poses a severe risk of data loss and operational disruption, as it can effectively erase evidence or prevent legitimate resolution tracking without triggering appropriate audit alerts. This level of control undermines trust in the ticketing system's reliability and could lead to compliance violations if sensitive incident data is modified or obscured by unauthorized parties.
This vulnerability aligns with CWE-269, which describes Improper Privilege Management, specifically where an actor obtains privileges that they are not authorized to have. It also maps directly to MITRE ATT&CK technique T1078, Valid Accounts, as the exploitation requires valid authentication credentials but abuses them to perform actions beyond their intended scope. Furthermore, it reflects CWE-639, Authorization Bypass Through User-Controlled Key, since the attacker controls the ticket identifier (the key) used in the API call without corresponding authorization checks for that specific resource instance. To mitigate this risk, developers must implement strict object-level access control logic within the PUT endpoints to verify group membership or ownership before processing any modification requests. Input validation should ensure that only tickets belonging to groups associated with the authenticated user's profile are eligible for updates. Additionally, enabling comprehensive audit logging and implementing rate limiting on batch operations can help detect and prevent abuse of these endpoints while a permanent code fix is deployed in subsequent releases.