CVE-2026-25938: Fuxa server Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-v4p5-w6r3-2x4f
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CWE-306 CWE-290
Published
Advisory Summary

CVE-2026-25938 is a CRITICAL remote code execution vulnerability (CWE-306: Missing Authentication for Critical Function) affecting Fuxa server libraries in the npm ecosystem. The issue involves fuxa unauthenticated remote code execution in node-red integration. Remediation is available by upgrading affected packages to version 1.2.11.

CVE-2026-25938 at a Glance

CVE Identifier CVE-2026-25938
GHSA Identifier GHSA-v4p5-w6r3-2x4f
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-306: Missing Authentication for Critical Function
Affected Product Fuxa server
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-25938

To remediate this vulnerability, upgrade all affected Fuxa server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

fuxa-server fixed: 1.2.11 
npm install fuxa-server@1.2.11
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls fuxa-server

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-25938, inspect your project dependencies using npm:

npm ls fuxa-server

Analyze the terminal output to locate any version of Fuxa server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.11), your application is affected.

Note: The npm ls fuxa-server command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-306: Missing Authentication for Critical Function, where the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. In Fuxa server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary **Description** An authentication bypass vulnerability in FUXA allows an unauthenticated, remote attacker to execute arbitrary code on the server when the Node-RED plugin is enabled. This affects FUXA version 1.2.8 through version 1.2.10. This has been patched in FUXA version 1.2.11. ### Impact This affects all deployments with the Node-RED plugin enabled, including those with `runtime.settings.secureEnabled` set to true. Exploitation allows an unauthenticated, remote attacker to send a specially crafted request to the `/nodered/flows` endpoint to bypass authentication checks, granting the attacker administrative access to the Node-RED deployment API. By submitting a malicious flow configuration, an attacker can execute arbitrary code in the context of the FUXA service. Depending on deployment configuration and permissions, this may lead to full system compromise and could further expose connected ICS/SCADA environments to follow-on actions. ### Patches This issue has been patched in FUXA version 1.2.11. Users are strongly encouraged to update to the latest available release.

CVE-2026-25938 Affected Fuxa server Versions

1 component(s)
Fixed Versions:
1.2.11
Product / Package Ecosystem Affected Versions Fixed Version
fuxa-server
npm/fuxa-server
npm
≥ 1.2.8
< 1.2.11
1.2.11

References

GitHub Advisory / Wiki ADVISORY
https://github.com/frangoteam/FUXA/security/advisories/GHSA-v4p5-w6r3-2x4f
NVD — CVE-2026-25938 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25938
Security Fix Commit FIX COMMIT
https://github.com/frangoteam/FUXA/commit/5e7679b09718534e4501a146fdfe093da29af336
Fuxa server Source Repository REPOSITORY
https://github.com/frangoteam/FUXA
Fuxa server Release RELEASE
https://github.com/frangoteam/FUXA/releases/tag/v1.2.11

Frequently Asked Questions

What is CVE-2026-25938?
CVE-2026-25938 is a security vulnerability in Fuxa server involving FUXA Unauthenticated Remote Code Execution in Node-RED Integration under CWE-306: Missing Authentication for Critical Function.
Which Fuxa server versions are affected?
Affected versions include releases prior to 1.2.11 across affected packages: fuxa-server.
What version fixes CVE-2026-25938?
Upgrading to 1.2.11 (or the latest patched release for your respective branch) resolves the vulnerability.
Is fuxa-server affected?
Yes, fuxa-server is affected in releases prior to 1.2.11. Upgrade your dependency to 1.2.11 or later.
What CWE is associated with CVE-2026-25938?
CVE-2026-25938 is classified under CWE-306: Missing Authentication for Critical Function (The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.).
How can I check npm dependencies for CVE-2026-25938?
Run the dependency tree command: 'npm ls fuxa-server'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-v4p5-w6r3-2x4f",
  "modified" : "2026-02-10T02:57:49Z",
  "published" : "2026-02-10T00:27:31Z",
  "aliases" : [ "CVE-2026-25938" ],
  "summary" : "FUXA Unauthenticated Remote Code Execution in Node-RED Integration",
  "details" : "### Summary\n\n**Description**\nAn authentication bypass vulnerability in FUXA allows an unauthenticated, remote attacker to execute arbitrary code on the server when the Node-RED plugin is enabled. This affects FUXA version 1.2.8 through version 1.2.10. This has been patched in FUXA version 1.2.11.\n\n### Impact\nThis affects all deployments with the Node-RED plugin enabled, including those with `runtime.settings.secureEnabled` set to true.\n\nExploitation allows an unauthenticated, remote attacker to send a specially crafted request to the `/nodered/flows` endpoint to bypass authentication checks, granting the attacker administrative access to the Node-RED deployment API. By submitting a malicious flow configuration, an attacker can execute arbitrary code in the context of the FUXA service. Depending on deployment configuration and permissions, this may lead to full system compromise and could further expose connected ICS/SCADA environments to follow-on actions.\n\n### Patches\nThis issue has been patched in FUXA version 1.2.11. Users are strongly encouraged to update to the latest available release.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "fuxa-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2.8"
      }, {
        "fixed" : "1.2.11"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/frangoteam/FUXA/security/advisories/GHSA-v4p5-w6r3-2x4f"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25938"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/frangoteam/FUXA/commit/5e7679b09718534e4501a146fdfe093da29af336"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/frangoteam/FUXA"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/frangoteam/FUXA/releases/tag/v1.2.11"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-290", "CWE-306" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-10T00:27:31Z",
    "nvd_published_at" : "2026-02-09T23:16:06Z"
  }
}