CVE-2026-71158

Modified Modified - Updated After Analysis

Unauthenticated Data Access in Helidon

Publication date: 2026-08-18

Last updated on: 2026-08-28

Assigner: Oracle

Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-18

Last Modified

2026-08-28

Generated

2026-09-08

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-06

NVD

CVE-2026-71158

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	3.2.18

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 version 3.2.18. It allows an unauthenticated attacker to remotely access the Imperative Web Server component via HTTP. The flaw enables unauthorized access to sensitive data or complete data exposure within Helidon's accessible systems.

Detection Guidance

To detect this vulnerability, check if your system is running Helidon version 3.2.18. Use commands like 'java -jar helidon.jar --version' or inspect application logs for Helidon framework references. Monitor network traffic for HTTP requests targeting Helidon endpoints.

Impact Analysis

If you use Helidon 3.2.18, an attacker could exploit this to steal confidential data or gain full access to systems managed by Helidon. This could lead to data breaches, loss of sensitive information, or further network compromise depending on the exposed data.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection requirements or HIPAA's safeguards for protected health information. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Upgrade Helidon to a version later than 3.2.18 to address the vulnerability. Apply any available patches from Oracle immediately. Restrict network access to Helidon services via firewalls or network segmentation until patched.

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