CVE-2026-42922 in FUXA
Summary
by MITRE • 10/29/2026
A authorization bypass vulnerability exists in the /nodered functionality of FUXA (version(s): 1.3.2-2809). A specially crafted HTTP request can lead to a arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/29/2026
The security flaw identified in the Node-RED functionality of FUXA versions prior to 1.3.2-2809 represents a critical failure in access control mechanisms, specifically categorized under CWE-287 as an Improper Authentication or Authorization bypass. This vulnerability stems from insufficient validation of user privileges when processing HTTP requests directed at specific endpoints within the Node-RED interface. In a properly secured industrial automation environment, administrative functions and configuration changes must be strictly gated behind robust authentication checks to prevent unauthorized modifications. However, in this instance, the application fails to verify whether the incoming request originates from an authenticated administrator or a standard user, effectively allowing any actor with network access to interact with sensitive system components without providing valid credentials.
The technical nature of this flaw allows for arbitrary code execution through specially crafted HTTP requests that exploit the lack of authorization checks. By targeting specific API endpoints associated with Node-RED flows and configurations, an unauthenticated attacker can inject malicious payloads into the application logic. Since Node-RED is a flow-based programming tool often used to wire together hardware devices, APIs, and online services in IoT environments, its underlying execution engine poses significant risk if compromised. The ability to execute arbitrary code means that an attacker can manipulate the runtime environment of FUXA, potentially gaining full control over the host system where the application resides. This aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter, as the vulnerability facilitates the execution of commands within the operating system context through the compromised application layer.
The operational impact of this vulnerability is severe, particularly in industrial settings where FUXA is deployed for supervisory control and data acquisition (SCADA) purposes. An attacker who successfully exploits this flaw can achieve remote code execution with the privileges of the user account running the FUXA service. This could lead to a complete compromise of the underlying infrastructure, including the theft or manipulation of critical process data, disruption of industrial operations, and use of the compromised system as a pivot point for further attacks within the network. The lack of authentication requirement means that this vulnerability is easily exploitable by any remote attacker with connectivity to the service, significantly increasing the attack surface and reducing the barrier to entry for malicious actors compared to vulnerabilities requiring prior access or valid credentials.
To mitigate this risk, immediate action must be taken to upgrade FUXA to version 1.3.2-2809 or later, where these authorization checks have been corrected. In environments where upgrading is not immediately feasible, network-level controls such as firewalls should be configured to restrict access to the Node-RED interface exclusively from trusted administrative IP addresses. Additionally, implementing strong authentication mechanisms and ensuring that the FUXA service runs under a least-privilege account can help limit the potential damage if an exploitation attempt occurs. Regular security audits and penetration testing of industrial control system interfaces are recommended to identify similar authorization gaps before they can be exploited in production environments.