CVE-2026-83439

Analyzed Analyzed - Analysis Complete

Unauthorized Data Access in Oracle Helidon

Publication date: 2026-09-15

Last updated on: 2026-09-28

Assigner: Oracle

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).

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-28

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83439

EUVD

EUVD-2026-79737

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	From 4.0.0 (inc) to 4.5.4 (inc)
oracle	helidon	From 3.0.0 (inc) to 3.2.20 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Fusion Middleware's Helidon product, specifically in the helidon-security-providers-idcs-mapper component. It affects versions 3.0.0-3.2.20 and 4.0.0-4.5.4. The issue allows a low-privileged attacker with network access via HTTP to exploit it easily.

Detection Guidance

This vulnerability affects Oracle Helidon versions 3.0.0-3.2.20 and 4.0.0-4.5.4. To detect it, check the installed Helidon version using commands like 'java -jar helidon.jar --version' or inspect dependency files (pom.xml, build.gradle) for affected versions. Monitor network traffic for unusual HTTP requests targeting Helidon services.

Impact Analysis

An attacker could exploit this to create, delete, or modify critical data or all accessible data in Helidon. They could also gain unauthorized access to critical data or all accessible data, leading to significant data breaches or integrity issues.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's security rules. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Upgrade Helidon to a version later than 3.2.20 for 3.x or later than 4.5.4 for 4.x. Apply Oracle Fusion Middleware patches as soon as available. Restrict network access to HTTP ports used by Helidon. Monitor logs for unauthorized data access attempts.

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