# CVE-2026-72586: frangoteam FUXA missing authentication in DAQ_QUERY handler

Source: https://junglewise.ai/threats/cve-2026-72586-frangoteam-fuxa-missing-authentication-in-daq-query-handler  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-10. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-72586 · Severity: high · CVSS 7.5 · Published 2026-08-10

FUXA is a web-based SCADA/HMI visualization software used to monitor and control industrial processes. An unauthenticated attacker can query all historical sensor data by exploiting a missing authentication check in the DAQ_QUERY Socket.IO event, bypassing the security controls that protect other sensitive operations when security is enabled.

Technologies: [Frangoteam FUXA](https://junglewise.ai/threats/technologies/fuxa). Vendors: [Frangoteam](https://junglewise.ai/threats/vendors/frangoteam).

## Quick answers

**Is CVE-2026-72586 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-72586 being exploited in the wild.

**How severe is CVE-2026-72586?** High severity, with a CVSS score of 7.5, published 10 August 2026.

**Which products and versions are affected?** Frangoteam FUXA through 1.3.3.

**Is there a fix for CVE-2026-72586?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-72586 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-72586?** Check whether you run Frangoteam FUXA at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

FUXA contains an authentication bypass vulnerability in the DAQ_QUERY Socket.IO event handler located in server/runtime/index.js. While other sensitive Socket.IO events (DEVICE_BROWSE, HOST_INTERFACES, DEVICE_TAGS_REQUEST, etc.) correctly call isSocketAdminAuthorized to verify connection tokens when secureEnabled=true, the DAQ_QUERY handler entirely lacks this authentication check. An unauthenticated remote attacker can connect via Socket.IO and invoke DAQ_QUERY to retrieve historical sensor data without credentials. The vulnerability affects FUXA through version 1.3.3 and requires network access to the Socket.IO endpoint but no user interaction or authentication.

## Affected products

- frangoteam FUXA through 1.3.3

## Timeline

- 2026-08-10: disclosed

## References

- [https://github.com/frangoteam/FUXA](https://github.com/frangoteam/FUXA)
- [https://github.com/frangoteam/FUXA/blob/master/server/runtime/index.js](https://github.com/frangoteam/FUXA/blob/master/server/runtime/index.js)

## Related threats

- [FUXA authorization bypass in /api/runscript](https://junglewise.ai/threats/cve-2026-42949-a-authorization-bypass-vulnerability-exists-in-the-api-runscript)
- [FUXA /nodered authorization bypass to RCE](https://junglewise.ai/threats/cve-2026-42922-a-authorization-bypass-vulnerability-exists-in-the-nodered)
- [FUXA information disclosure in Node-RED scripts endpoint](https://junglewise.ai/threats/cve-2026-40063-a-information-disclosure-vulnerability-exists-in-the-nodered-fuxa)
- [FUXA unauthenticated information disclosure in Socket.IO handlers](https://junglewise.ai/threats/cve-2026-67440-fuxa-unauthenticated-information-disclosure-in-socket-io-handlers)
- [Frangoteam FUXA privilege escalation in Scheduler API](https://junglewise.ai/threats/cve-2026-47721-frangoteam-fuxa-privilege-escalation-in-scheduler-api)