# CVE-2026-83439

## Summary

- **CVE ID:** CVE-2026-83439
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** N/A
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-security-providers-idcs-mapper).  Supported versions that are affected are 3.0.0-3.2.20 and 4.0.0-4.5.4. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Helidon accessible data as well as  unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

## Affected Products

- Oracle Corporation — Helidon (3.0.0)
- Oracle Corporation — Helidon (4.0.0)

## References

- [CNA](https://www.oracle.com/security-alerts/cspusep2026.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.9

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._