CVE-2026-111709 in WhaTicket Community
Summary
by MITRE • 10/16/2026
WhaTicket Community through commit cf04795 contains an insecure direct object reference vulnerability that allows authenticated agents to access other agents' tickets because ShowTicketService performs no ownership or queue checks. Attackers can supply another agent's ticket id to GET /tickets/:ticketId and /messages/:ticketId to read full message history and POST WhatsApp replies.
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Analysis
by VulDB Data Team • 10/16/2026
The WhaTicket Community platform, specifically following commit cf04795, suffers from a critical insecure direct object reference vulnerability that fundamentally compromises the integrity of its multi-tenant architecture. This flaw resides within the ShowTicketService component, which is responsible for retrieving ticket data and associated messages based on identifiers provided by authenticated users. The core technical deficiency lies in the complete absence of authorization checks regarding resource ownership or queue membership when processing requests to access specific tickets. Instead of validating whether the currently authenticated agent has permission to view a particular ticket ID, the service blindly trusts the input parameter supplied by the client application. This design oversight allows any authenticated user with valid credentials for one account to manipulate the object reference in HTTP GET and POST requests targeting endpoints such as /tickets/:ticketId and /messages/:ticketId. By simply substituting their own legitimate ticket identifier with that of another agent, an attacker can bypass all intended access controls and retrieve sensitive information belonging to colleagues or other tenants within the system.
The operational impact of this vulnerability is severe due to the nature of the data involved in customer support platforms like WhaTicket. Tickets typically contain detailed conversation histories, including personal identifiable information, customer complaints, and potentially confidential business communications exchanged between agents and end-users via WhatsApp integration. The ability to read full message history means that an attacker can perform comprehensive surveillance on other agents' interactions without detection or restriction. Furthermore, the vulnerability extends beyond passive data exfiltration because it also affects write operations through POST requests to send WhatsApp replies. This capability allows a malicious actor not only to spy but potentially to impersonate another agent by sending messages from their account using their associated ticket context. Such actions could lead to significant reputational damage for affected agents, breach of customer privacy regulations such as GDPR or CCPA, and potential manipulation of ongoing support cases if the attacker chooses to inject misleading information into active conversations.
From a classification perspective, this vulnerability aligns directly with CWE-284, which describes Improper Access Control where insufficient authorization checks allow unauthorized access to resources. The exploitation technique maps closely to MITRE ATT&CK tactic T1078, specifically Valid Accounts and potentially T1530 if the attacker is exfiltrating data from cloud storage or application databases via these endpoints. In a typical SaaS environment for customer relationship management or helpdesk software, strict isolation between tenants and roles is paramount. The failure to enforce row-level security or object-level permissions represents a fundamental architectural flaw that undermines trust in the platform's ability to protect user data.
Mitigation strategies must focus on implementing robust authorization logic within the ShowTicketService layer immediately upon receipt of any request involving resource identifiers. Developers should ensure that every access control check verifies two critical conditions: first, that the authenticated session belongs to a valid agent or administrator role with sufficient privileges; and second, that this specific user is explicitly assigned to the queue associated with the requested ticket or owns the ticket directly. Implementing middleware that intercepts these requests before they reach business logic can provide an additional layer of defense by validating ownership relationships against the database records for both tickets and their corresponding queues. Additionally, adopting a principle of least privilege ensures that agents only have access to resources necessary for their specific operational scope. Regular security audits and static application security testing should be integrated into the development lifecycle to detect such logic flaws early, ensuring that future commits do not reintroduce similar bypasses in other parts of the application where object references are utilized.