CVE-2026-65984
FUXA: JWT lifecycle flaws allow deleted or demoted users to retain privileged sessions
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 18, 2026
- Updated
- Aug 19, 2026
- Reserved
- Jul 23, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.5 High | 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 | GitHub_M |
Weaknesses
- CWE-613 Insufficient Session Expiration
Affected Products
| Product | Versions |
|---|---|
FUXAfrangoteam |
|
References
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