CVE-2026-43946

HIGH

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

Title source: cna

Description

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.

References (4)

Core 4

Core References

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https://github.com/frangoteam/FUXA/security/advisories/GHSA-fwcm-rqvw-j3p7

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https://github.com/frangoteam/FUXA/pull/2260

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

View Writeup ZIP pw:eip

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

Scores

CVSS v4 7.7

EPSS 0.0054

EPSS Percentile 42.5%

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-863

Status published

Products (1)

frangoteam/FUXA = 1.3.0

Published Jul 21, 2026

Tracked Since Jul 22, 2026