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CVE-2026-43947

HighCVSS 8.9 / 10
Published Jul 21, 2026·Last modified Jul 22, 2026
Affected Components(0)

No affected components available

Description

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.

Risk Scores
Base Score
8.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
8.1

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
0.67%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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