CVE-2026-83278

Received Received - Intake

Unauthenticated Data Access in Oracle Helidon

Publication date: 2026-09-15

Last updated on: 2026-09-18

Assigner: Oracle

Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-integrations-neo4j). Supported versions that are affected are 3.0.0-3.2.20 and 4.0.0-4.5.4. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Helidon executes 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 6.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-15

Last Modified

2026-09-18

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83278

EUVD

EUVD-2026-79630

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	From 3.0.0 (inc) to 3.2.20 (inc)
oracle	helidon	From 4.0.0 (inc) to 4.5.4 (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 vulnerability affects Oracle Fusion Middleware's Helidon product, specifically the helidon-integrations-neo4j component. It impacts versions 3.0.0-3.2.20 and 4.0.0-4.5.4. The issue allows an unauthenticated attacker with physical network access to compromise the system. Successful exploitation could lead to unauthorized data creation, deletion, or modification, as well as unauthorized access to critical data.

Detection Guidance

This vulnerability requires physical access to the network segment where Helidon executes, making remote detection challenging. Check Helidon versions 3.0.0-3.2.20 and 4.0.0-4.5.4 for exposure. Monitor network traffic for unauthorized data access attempts or modifications targeting Helidon components.

Impact Analysis

If you use affected versions of Oracle Helidon, an attacker with physical network access could gain control over your system. This may result in unauthorized access to sensitive data, data tampering, or data deletion. The impact includes potential loss of confidentiality and integrity of critical information.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations using affected Helidon versions may face legal penalties, data breach notifications, and reputational damage due to non-compliance with data protection standards.

Mitigation Strategies

Update Helidon to a version that is not affected by this vulnerability. Affected versions are 3.0.0-3.2.20 and 4.0.0-4.5.4. Apply the latest patches from Oracle to address the issue.

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