# CVE-2026-13207: Frangoteam FUXA authentication bypass in REST API

Source: https://junglewise.ai/threats/cve-2026-13207-frangoteam-fuxa-authentication-bypass-in-rest-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-30. Updated: 2026-06-30  
License: CC BY 4.0 with a link back

CVE-2026-13207 · Severity: high · CVSS 7.5 · Published 2026-06-30

Frangoteam FUXA is a web-based platform used for industrial automation and monitoring (SCADA/HMI). A security flaw in its web interface allows unauthorized individuals to bypass login requirements and access sensitive system information, such as user accounts and role assignments. This could allow an attacker to map out the system's security structure without needing any credentials.

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

## Quick answers

**Is CVE-2026-13207 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-13207 being exploited in the wild.

**How severe is CVE-2026-13207?** High severity, with a CVSS score of 7.5, published 30 June 2026.

**Which products and versions are affected?** Frangoteam FUXA <= 1.3.1.

**Is there a fix for CVE-2026-13207?** A patch was published on 2026-05-19: Version 1.3.2 released with path normalization fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-13207 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-13207?** 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

An authentication bypass vulnerability exists in the REST API of Frangoteam FUXA SCADA/HMI versions 1.3.1 and earlier. The API router fails to normalize dot-segment sequences (such as '/./' or '/../') before the request reaches the authentication middleware. By crafting requests with these sequences (e.g., /api/./users), an unauthenticated remote attacker can bypass credential checks. Successful exploitation allows for the enumeration of all user accounts and role assignments. The issue is addressed in version 1.3.2.

## Affected products

- Frangoteam FUXA SCADA/HMI <= 1.3.1

## Timeline

- 2026-06-30: advisory: CISA ICSA-26-181-02 published
- 2026-05-19: patched: Version 1.3.2 released with path normalization fix

## References

- [https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-181-02.json](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-181-02.json)
- [https://github.com/frangoteam/FUXA/releases](https://github.com/frangoteam/FUXA/releases)
- [https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-02](https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-02)

## 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)