CVE-2026-47717 in Fuxa
Summary
by MITRE • 08/13/2026
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. In fuxa-server version 1.3.0, the GET /api/project endpoint exposes sensitive project configuration data to guest-context requests even when secureEnabled is enabled. Version 1.3.1 fixes the issue.
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Analysis
by VulDB Data Team • 08/13/2026
The FUXA web-based Process Visualization software represents a critical vulnerability in industrial control systems where unauthorized access to sensitive configuration data can occur through improper authentication enforcement. This vulnerability specifically affects version 1.3.0 of the fuxa-server component, which operates as a SCADA/HMI/Dashboard platform that manages industrial process visualization and control interfaces. The issue manifests through the GET /api/project endpoint that fails to properly validate user context when secureEnabled is activated, allowing guest users to access project configuration data that should remain restricted to authenticated administrators.
The technical flaw resides in the server-side authorization logic where the system does not adequately verify user permissions before serving sensitive project configuration information. When secureEnabled is set to true, the software should enforce strict access controls that prevent unauthorized users from accessing critical system parameters, but this validation mechanism fails at the API endpoint level. The vulnerability represents a direct violation of the principle of least privilege and demonstrates inadequate input validation and access control implementation patterns that are commonly addressed by CWE-285 Access Control Checks.
From an operational perspective, this vulnerability creates significant risk for industrial environments where FUXA serves as a process visualization platform. Attackers who gain guest-level access to the system can extract sensitive project configuration data including process parameters, control logic settings, and potentially network configurations that could be used to plan more sophisticated attacks against the industrial control systems. The impact extends beyond simple data exposure since this information could enable attackers to understand system architecture, identify potential entry points, and develop targeted approaches for disrupting or compromising operational technology environments.
The vulnerability aligns with several ATT&CK framework techniques including T1566 Initial Access through credential harvesting and T1083 File and Directory Discovery, as the exposed configuration data provides attackers with information about system structure and components. Additionally, this issue relates to T1595 Active Scanning where attackers can systematically probe for vulnerable endpoints that expose unauthorized access to industrial control system configurations. The security implications are particularly concerning in environments where these systems operate in closed-loop control scenarios where configuration exposure could lead to operational disruptions or safety hazards.
Organizations implementing FUXA should immediately upgrade to version 1.3.1 or later to remediate this vulnerability, as the fix addresses the core authorization flaw that allows guest users to bypass normal access controls for sensitive project data. Security teams should also implement network segmentation and additional monitoring around API endpoints to detect unauthorized access attempts. The incident highlights the importance of proper authentication enforcement in industrial control systems and demonstrates how seemingly minor authorization gaps can create significant security risks in operational technology environments where system integrity and availability are paramount considerations.
This vulnerability exemplifies the broader challenge faced by industrial cybersecurity professionals who must ensure that web-based interfaces used for process visualization maintain appropriate access controls while providing necessary functionality to authorized personnel. The fix implemented in version 1.3.1 likely involved strengthening the endpoint validation logic to properly check user authentication status and role permissions before serving project configuration data, ensuring that only authenticated users with appropriate privileges can access sensitive system information through the API interface.