FUXA has an unauthenticated arbitrary tag value disclosure via /api/getTagValue

{
  "id": "e95c019f603b5c1e9a73e15c0b15d74482e722a05a726d66724a3faa89137f87",
  "url": "https://osv.dev/vulnerability/CVE-2026-43946",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FUXA has an unauthenticated arbitrary tag value disclosure via /api/getTagValue",
    "summary": "FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Version 1.3.0 has an authorization bypass in the /api/getTagValue endpoint allows unauthenticated access to tag values when the referenced script does not exist. Version 1.3.1 patches the issue.",
    "evidence": "osv:CVE-2026-43946",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-43946",
      "aliases": [
        "CVE-2026-43946",
        "GHSA-fwcm-rqvw-j3p7"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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-2026-43946.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.081130430Z",
      "provider": "osv",
      "references": [
        "https://github.com/frangoteam/FUXA/releases/tag/v1.3.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43946.json",
        "https://github.com/frangoteam/FUXA/security/advisories/GHSA-fwcm-rqvw-j3p7",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43946",
        "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-2026-43946.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43946",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517591,
  "published_at": "2026-07-21T21:27:29.248+00:00"
}