---
id: "CVE-2026-42949"
kind: "vulnerability"
aliases: ["CVE-2026-42949"]
title: "FUXA: unauthenticated request to /api/runscript runs privileged operations"
severity: "medium"
cvss: 5.6
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["fuxa", "industrial-control", "runtime", "scada", "self-hosted"]
not_affected_if: ["not-exposed-to-network", "other-versions"]
published_at: "2026-10-29T04:18:36+00:00"
first_seen_at: "2026-10-29T04:41:58+00:00"
updated_at: "2026-10-29T04:43:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42949", "first_seen_at": "2026-10-29T04:41:58+00:00"}]
---

# FUXA: unauthenticated request to /api/runscript runs privileged operations

FUXA, a web-based SCADA and HMI tool, has an authorization bypass in its /api/runscript endpoint, version 1.3.2-2809 named in the advisory. A specially crafted unauthenticated HTTP request can trigger a privileged operation on the server.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the running FUXA version against `1.3.2-2809`, the version named in the NVD entry.
- Confirm whether the instance is reachable from untrusted networks, since the request needs no login.

## Timeline

- 2026-10-29T04:41:58+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-42949

## From the sources

A authorization bypass vulnerability exists in the /api/runscript functionality of FUXA (version(s): 1.3.2-2809). A specially crafted HTTP request can lead to execute priviledged operation. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_