# CVE-2026-65984

## Summary

- **CVE ID:** CVE-2026-65984
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-613
- **Published:** Aug 18, 2026
- **Last Modified:** Aug 19, 2026

## Description

FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. In 1.3.2 and earlier, POST /api/refresh in server/api/auth/index.js falls back from current user data to decoded.groups, including when the user is deleted or groups is zero, and POST /api/heartbeat in server/api/index.js re-signs inbound JWT claims without validating the current database record. An attacker who possesses a previously issued privileged refresh cookie or access token can continue minting privileged JWTs after account deletion, disablement, role removal, or demotion. Continued refresh-cookie rotation can extend the stale session and preserve unauthorized access to user management, project manipulation, runtime configuration, scripts, and backdoor-account creation. This issue is fixed in version 1.3.3.

## Affected Products

- frangoteam — FUXA (< 1.3.3)

## References

- [CNA](https://github.com/frangoteam/FUXA/security/advisories/GHSA-rg7m-xwqc-mjw6)
- [CNA](https://github.com/frangoteam/FUXA/pull/2379)
- [CNA](https://github.com/frangoteam/FUXA/commit/4fa47d0a2a856ed34f427f472fb4450f86e7749b)
- [CNA](https://github.com/frangoteam/FUXA/releases/tag/v1.3.3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.47%
- **EPSS Percentile:** 39.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._