FUXA Vulnerable to Unauthenticated Remote Code Execution via Script Test Mode Authorization Bypass

{
  "id": "37d9107fa657f31454f2ff749fa4e1471e8ed8fe631589f397eddf727c90331f",
  "url": "https://osv.dev/vulnerability/CVE-2026-43947",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FUXA Vulnerable to Unauthenticated Remote Code Execution via Script Test Mode Authorization Bypass",
    "summary": "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.",
    "evidence": "osv:CVE-2026-43947",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-43947",
      "aliases": [
        "CVE-2026-43947",
        "GHSA-rg3m-cfq7-g6h6"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/frangoteam/fuxa",
              "type": "GIT",
              "events": [
                {
                  "introduced": "029c42a41e85dc78def81682c5aac490a88ef223"
                },
                {
                  "fixed": "78534da61a91613712b44bb63c8d7da8c5df5ca4"
                },
                {
                  "fixed": "c48f6560d8bc2e678322d2c5b21887d038a69c48"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "= 1.3.0"
                      },
                      {
                        "last_affected": "= 1.3.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "78534da61a91613712b44bb63c8d7da8c5df5ca4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c48f6560d8bc2e678322d2c5b21887d038a69c48"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.3.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "= 1.3.0",
            "v1.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43947.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.639382825Z",
      "provider": "osv",
      "references": [
        "https://github.com/frangoteam/FUXA/releases/tag/v1.3.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43947.json",
        "https://github.com/frangoteam/FUXA/security/advisories/GHSA-rg3m-cfq7-g6h6",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43947",
        "https://github.com/frangoteam/FUXA/commit/78534da61a91613712b44bb63c8d7da8c5df5ca4",
        "https://github.com/frangoteam/FUXA/pull/2260"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43947.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43947",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 502055,
  "published_at": "2026-07-21T21:33:09.631+00:00"
}