CVE-2026-43947

The record

An unauthenticated Remote Code Execution vulnerability exists in FUXA when `secureEnabled` is set to `true`. The `POST /api/runscript` endpoint checks authorization against the stored script's permission by ID, but when `test: true` is set in the request, it compiles and executes attacker-supplied code instead of the stored script's code. An unauthenticated attacker who knows a valid script ID and name may execute arbitrary code via test mode if at least one server-side script exists and is accessible without restrictive permissions. Script IDs and names can be obtained through the unauthenticated information disclosure in `GET /api/project` (reported separately). The only prerequisite is that at least one server-side script exists in the project.

Affected packages

Related vulnerabilities

• GHSA-rg3m-cfq7-g6h6 FUXA Vulnerable to Unauthenticated Remote Code Execution via Script Test Mode… Same vulnerability
• CVE-2026-47720 FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Also affects fuxa-server
• CVE-2026-47719 FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Also affects fuxa-server
• CVE-2026-47721 FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Also affects fuxa-server
• GHSA-8ghr-w65f-j3qr FUXA's scheduler API missing admin check enables operator-to-admin escalation via… Also affects fuxa-server
• GHSA-h9fj-c2qr-76g2 FUXA has SQL Injection in its TDengine DAQ connector via backslash bypass of… Also affects fuxa-server
• GHSA-w86f-rf9w-h3x6 FUXA: Unauthenticated SSRF via Socket.IO DEVICE_WEBAPI_REQUEST and DEVICE_PROPERTY with… Also affects fuxa-server
• GHSA-r9g5-7q8j-958c FUXA provides guest and invalid-token access to protected read APIs in secure mode Also affects fuxa-server