CVE-2026-111676 in Faveo Helpdesk
Summary
by MITRE • 10/16/2026
Faveo Helpdesk through 2.0.3 contains a broken access control vulnerability that allows authenticated agents to read tickets in other departments via the getTooltip handler. Attackers can enumerate sequential ticketid values on GET /ticket/tooltip to read ticket conversations, including customer personal data and internal agent notes.
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Analysis
by VulDB Data Team • 10/16/2026
The Faveo Helpdesk software version 2.0.3 is affected by a critical broken access control vulnerability that undermines the fundamental security principle of separation between different organizational units within the application. This flaw specifically impacts authenticated agents who are granted specific permissions to view and manage tickets assigned to their own department or team. The vulnerability arises from an insufficient server-side validation mechanism in the getTooltip handler, which is responsible for retrieving supplementary information about support tickets via HTTP GET requests directed at the /ticket/tooltip endpoint. Instead of verifying that the requesting agent has explicit authorization to access data associated with a specific ticket ID within their permitted scope, the application blindly processes the provided identifier and returns sensitive content regardless of departmental boundaries. This architectural oversight allows any authenticated user to bypass intended isolation mechanisms by simply manipulating input parameters without needing elevated privileges or exploiting complex injection techniques.
The operational impact of this vulnerability is severe due to its potential for systematic data enumeration. Attackers can exploit the predictable nature of sequential ticket identifiers, which are commonly used in helpdesk systems as primary keys that increment with each new support request. By iterating through a range of integer values and submitting GET requests to /ticket/tooltip, an adversary can systematically harvest information from tickets belonging to other departments or even higher-level management tiers who may have restricted access levels for certain sensitive cases. The data exposed includes full conversation histories between customers and agents, which often contain personally identifiable information such as names, email addresses, phone numbers, and detailed descriptions of issues that may involve financial or proprietary business concerns. Furthermore, the vulnerability exposes internal agent notes, which are typically intended only for internal team communication and might contain strategic insights, performance evaluations, or confidential troubleshooting steps not meant to be visible to all staff members.
From a classification perspective, this issue aligns with CWE-284 Improper Access Control, as the application fails to enforce proper authorization checks before granting access to sensitive resources. The ability of an authenticated user to read data outside their assigned scope represents a direct violation of role-based or attribute-based access control policies implemented by the system administrators. Additionally, this vulnerability facilitates unauthorized information disclosure and can be leveraged in conjunction with other attacks to map out the internal structure of the helpdesk environment, potentially leading to further privilege escalation if combined with other weaknesses such as insecure direct object references where sequential IDs are not randomized or obscured. The attack pattern resembles automated enumeration techniques often documented under ATT&CK technique T1087 Account Discovery, although in this context it is applied specifically to resource discovery within the application layer rather than network accounts.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. Administrators should immediately apply any available patches from Faveo that correct the access control logic in the getTooltip handler. Until a patch is deployed, implementing web application firewall rules can help detect and block automated sequential enumeration attempts by monitoring for rapid-fire GET requests to /ticket/tooltip with incrementing parameters. From a development standpoint, it is essential to enforce strict authorization checks on every endpoint that handles resource-specific data, ensuring that the identity of the requesting user is validated against an access control list or role definition before any database query is executed. Furthermore, replacing sequential integer identifiers with non-sequential unique identifiers such as UUIDs can significantly increase the difficulty for attackers attempting to enumerate resources through brute-force methods, although this should not be relied upon as a sole security measure since it does not fix the underlying authorization flaw. Regular security audits and penetration testing focused on access control mechanisms are recommended to identify similar vulnerabilities across other modules of the helpdesk platform.