CVE-2026-72554 in Faveo Helpdesk
Summary
by MITRE • 08/11/2026
A broken access control vulnerability in Ladybird Web Solution Faveo Helpdesk 2.0.3 allows any self-registered customer to read ticket conversations belonging to other customers via the v1 REST API. The API verifies the existence of the requested ticket but not ownership, enabling any authenticated user to access arbitrary ticket threads including internal agent notes containing sensitive information.
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Analysis
by VulDB Data Team • 08/11/2026
This vulnerability represents a critical authorization flaw in the Faveo Helpdesk 2.0.3 web application that violates fundamental principles of access control and data protection. The issue stems from improper implementation of ticket ownership verification within the v1 REST API endpoints, where the system validates ticket existence but fails to enforce proper access controls based on user permissions or ownership relationships. This broken access control mechanism creates a significant security gap that allows any authenticated user to enumerate and read confidential ticket conversations that should be restricted to authorized personnel only.
The technical implementation of this vulnerability aligns with CWE-285, which describes improper authorization issues in software systems, and specifically manifests as an authentication bypass or privilege escalation vector. When a user makes a request to the REST API endpoint, the system performs a basic validation to confirm that the ticket ID exists within the database but does not cross-reference the requesting user's credentials against the ticket's ownership or assigned team members. This oversight means that any legitimate user account can access any ticket conversation simply by knowing the ticket identifier, effectively eliminating the application's ability to maintain data confidentiality and integrity.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass serious privacy and security implications for organizations using this helpdesk solution. Internal agent notes, technical details, customer personal information, and sensitive business data contained within ticket threads become accessible to unauthorized users who may have no legitimate reason to access such information. This exposure creates potential risks including data breaches, regulatory compliance violations under standards like gdpr and hipaa, and compromise of customer trust relationships. The vulnerability particularly affects organizations that rely on helpdesk systems for handling confidential communications and support requests.
From an att&ck framework perspective, this vulnerability maps to tactic ta0006 privilege escalation and technique t1078 valid accounts, as it allows attackers to leverage legitimate user credentials to access restricted resources without requiring additional malicious techniques. The attack surface is further expanded by the fact that this issue affects self-registered customers who may not have elevated privileges, meaning that even basic customer accounts can exploit this flaw. Organizations should implement immediate mitigations including mandatory ownership verification for all ticket API endpoints, proper role-based access controls, and comprehensive input validation to prevent unauthorized access attempts.
Recommended remediation strategies include implementing robust authentication checks that verify user permissions against ticket ownership before serving any ticket data, establishing proper session management with appropriate access tokens, and conducting thorough security testing of all REST API endpoints. The solution should enforce strict authorization rules where users can only access tickets they own or have been explicitly granted permission to view. Additionally, organizations should consider implementing rate limiting and logging mechanisms to detect potential abuse attempts while maintaining audit trails for security monitoring purposes. Regular penetration testing and code reviews focused on access control implementations will help prevent similar issues in future development cycles and maintain compliance with industry security standards.