# CVE-2026-67443: FUXA: Unauthenticated guest JWT bypasses Node-RED secure-mode authorization gate (Remote Script Execution)

> Unauthenticated attackers can bypass Node-RED authorization in FUXA to deploy malicious scripts and execute arbitrary code on the host system.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Aug 2026
- **Updated:** 21 Aug 2026
- **Also known as:** GHSA-5h5x-9h7x-23f4

## What is CVE-2026-67443?

CVE-2026-67443 is a critical missing authorization vulnerability in frangoteam FUXA, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. In 1.3.2 and earlier, the allowDashboard authorization gate in server/integrations/node-red/index.js calls authJwt.verify for /nodered without inspecting the decoded identity. When nodeRedEnabled is true, secureEnabled is true, and nodeRedAuthMode is secure, a remote unauthenticated attacker can obtain a signed guest token from POST /api/heartbeat and use it to access the RED.httpAdmin editor and flow deployment API. Because the Node-RED configuration has no second adminAuth gate, the attacker can deploy function nodes or invoke fuxa.runScript and runtime.scriptsMgr.runScript, gaining control of FUXA project data, configuration, scripts, filesystem-capable runtime helpers, and potentially operating-system commands when nodeRedUnsafeModules is enabled. This issue is fixed in version 1.3.3.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-67443?


## How do I fix CVE-2026-67443?

No fix has been published for CVE-2026-67443 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-67443 being exploited?

There is no known exploitation of CVE-2026-67443 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-67443 and fix it if it is affected.

What it is: CVE-2026-67443 is a critical missing authorization vulnerability in frangoteam FUXA, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-67443 in the wild and no public exploit code.

Affected product: frangoteam FUXA. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-67443/ (Markdown: https://insights.sbomify.com/CVE-2026-67443/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-67443
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-67443
- OSV: https://osv.dev/vulnerability/CVE-2026-67443

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-67443/
Summaries are generated and may contain mistakes; the official description above is the record.