FrangoTeam FUXA up to 1.3.2 Device Handlers server/runtime/index.js improper authorization

Summaryinfo

A vulnerability identified as problematic has been detected in FrangoTeam FUXA up to 1.3.2. This issue affects some unknown processing of the file server/runtime/index.js of the component Device Handlers. The manipulation leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-67440. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in FrangoTeam FUXA up to 1.3.2. It has been rated as problematic. This issue affects some unknown functionality of the file server/runtime/index.js of the component Device Handlers. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. The summary by CVE is:

FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. In 1.3.2 and earlier, the DEVICE_BROWSE, DEVICE_NODE_ATTRIBUTE, HOST_INTERFACES, and DEVICE_TAGS_REQUEST handlers in server/runtime/index.js return device-discovery, node-attribute, host-network-interface, and device-tag metadata without isSocketAdminAuthorized when secureEnabled is true. A remote unauthenticated or guest user can invoke these metadata-oriented Socket.IO events and collect system-discovery information that is not required for normal public HMI viewing, while ordinary device status, value, alarm, and dashboard events remain intentionally public. This issue is fixed in version 1.3.3.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-67440 since 07/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 1.3.3 eliminates this vulnerability.

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Productinfo

Vendor

• FrangoTeam

Name

• FUXA

Version

• 1.3.0
• 1.3.1
• 1.3.2

Website

• Product: https://github.com/frangoteam/FUXA/

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