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CVE-2026-43947

CVE-2026-43947 · FUXA Vulnerable to Unauthenticated Remote Code Execution via Script Test Mode Authorization Bypass

This page contains facts from public vulnerability sources. Check the original advisory before updating.

FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Version 1.3.0 has an unauthenticated Remote Code Execution vulnerability 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. Version 1.3.1 fixes the issue.

CVSS 8.9 · High · EPSS 0.9% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • fuxa

    Versions
    • = 1.3.0: Affected

    No fix published

  • fuxa-server npm

    Versions
    • 1.3.0
    Affected ranges
    • SEMVER: ≥ 1.3.0, < 1.3.1

    Update to 1.3.1

Original sources

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