CVE-2026-71029

Analyzed Analyzed - Analysis Complete

Unauthenticated Data Access in Helidon

Publication date: 2026-08-18

Last updated on: 2026-08-31

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. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). 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 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-18

Last Modified

2026-08-31

Generated

2026-09-08

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-71029

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	From 3.0.0 (inc) to 3.2.17 (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 Imperative Web Server component. The affected version is 3.2.18. It allows an unauthenticated attacker with network access via HTTP to potentially compromise Helidon and access critical data.

Detection Guidance

Since this is a vulnerability in Oracle Helidon's Imperative Web Server, detection involves checking for exposed Helidon instances and verifying their versions. Inspect network traffic for HTTP requests targeting Helidon endpoints. Use tools like curl to query server headers for version information. Example: curl -I http://<target>:<port>. Ensure no Helidon 3.2.18 instances are exposed.

Impact Analysis

An attacker could exploit this to gain unauthorized access to sensitive data or all data accessible by Helidon. This could lead to data breaches, loss of confidential information, or further compromise of systems relying on Helidon.

Compliance Impact

This vulnerability allows unauthorized access to critical or all accessible data in Helidon, which could lead to exposure of sensitive personal or health information. This may violate GDPR (data protection) and HIPAA (health data privacy) if such data is compromised.

Mitigation Strategies

Update Helidon to a version unaffected by CVE-2026-71029. If immediate update is not possible, restrict network access to the Imperative Web Server component via firewall rules or network segmentation. Monitor HTTP traffic for unusual activity targeting Helidon services.

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