GHSA-C869-JX4C-Q5FC

Vulnerability from github – Published: 2026-02-10 00:28 – Updated: 2026-02-10 02:56
VLAI?
Summary
FUXA Unauthenticated Remote Arbitrary Scheduler Write
Details

Summary

An authorization bypass vulnerability in the FUXA allows an unauthenticated, remote attacker to create and modify arbitrary schedulers, exposing connected ICS/SCADA environments to follow-on actions. This vulnerability 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, including those with runtime.settings.secureEnabled set to true.

Exploitation allows an unauthenticated, remote attacker to automatically authenticate as guest and create, modify or delete schedules. These schedules can be configured to trigger immediately or cyclically, forcing connected devices to specific states or values, or executing existing scripts on the server.

Patches

This issue has been patched in FUXA version 1.2.11. Users are strongly encouraged to update to the latest available release.

Severity ?
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "fuxa-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.2.8"
            },
            {
              "fixed": "1.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25939"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-10T00:28:28Z",
    "nvd_published_at": "2026-02-09T23:16:06Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\nAn authorization bypass vulnerability in the FUXA allows an unauthenticated, remote attacker to create and modify arbitrary schedulers, exposing connected ICS/SCADA environments to follow-on actions. This vulnerability 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, including those with\u00a0`runtime.settings.secureEnabled`\u00a0set to\u00a0`true`.\n\nExploitation allows an unauthenticated, remote attacker to automatically authenticate as guest and create, modify or delete schedules. These schedules can be configured to trigger immediately or cyclically, forcing connected devices to specific states or values, or executing existing scripts on the server.\n\n### Patches\n\nThis issue has been patched in FUXA version 1.2.11. Users are strongly encouraged to update to the latest available release.",
  "id": "GHSA-c869-jx4c-q5fc",
  "modified": "2026-02-10T02:56:59Z",
  "published": "2026-02-10T00:28:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/frangoteam/FUXA/security/advisories/GHSA-c869-jx4c-q5fc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25939"
    },
    {
      "type": "WEB",
      "url": "https://github.com/frangoteam/FUXA/pull/2174"
    },
    {
      "type": "WEB",
      "url": "https://github.com/frangoteam/FUXA/commit/5782b35117a9bd14ffcb881f8dfb8c6680157d9b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/frangoteam/FUXA/commit/aced6ad0b6089eea4e5cef51c0a88bf4f308d45f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/frangoteam/FUXA"
    },
    {
      "type": "WEB",
      "url": "https://github.com/frangoteam/FUXA/releases/tag/v1.2.11"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "FUXA Unauthenticated Remote Arbitrary Scheduler Write"
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.