CVE-2026-43947

HIGHPre-NVD 8.98.9
EchelonGraph scoreLOW confidence

This high-severity CVE scores 8.9 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.8%, top 26% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m, epss
Trending — 3 sources updated this week
8.9
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.9
EG Score
8.9(low)
EG Risk
—
EPSS
48.0%
KEV
Not listed

Published

May 26, 2026

Last Modified

July 21, 2026

Advisory Details (4)

Auto-updated Jul 22, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available

Unauthenticated Remote Code Execution via Script Test Mode Authorization Bypass · Advisory · frangoteam/FUXA · GitHub

https://github.com/frangoteam/FUXA/security/advisories/GHSA-rg3m-cfq7-g6h6
github_release Patch Available

v1.3.1

Patch available: frangoteam/FUXA v1.3.1

https://github.com/frangoteam/FUXA/releases/tag/v1.3.1
github_pr Patch Available

Security fixes

Patch available: frangoteam/FUXA v1.3.1 (PR #2260 merged 2026-03-19)

https://github.com/frangoteam/FUXA/pull/2260
github_commit Patch Available

commit 78534da61a91 (frangoteam/FUXA)

Patch available: frangoteam/FUXA v1.3.1 (contains commit 78534da61a91)

https://github.com/frangoteam/FUXA/commit/78534da61a91613712b44bb63c8d7da8c5df5ca4

Vendor Advisories for CVE-2026-43947(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
fuxa-server1.3.01.3.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 23:13 UTCEG score recompute▲ 8.90
  3. 2026-07-21 21:38 UTCMITRE cvelistV5CVSS v3 → 8.9 · CVSS v4 → 8.9
  4. 2026-06-14 23:18 UTCEPSS rescore
  5. 2026-06-13 23:00 UTCEPSS rescore
  6. 2026-06-12 23:12 UTCEPSS rescore
  7. 2026-05-27 00:14 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43947?
CVE-2026-43947 is a high vulnerability published on May 26, 2026. 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:…
When was CVE-2026-43947 disclosed?
CVE-2026-43947 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43947 actively exploited?
CVE-2026-43947 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 48.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43947?
CVE-2026-43947 has a CVSS v3 base score of 8.9 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-43947?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43947, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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