CVE-2026-70727

Modified Modified - Updated After Analysis

Unauthenticated Data Read in Oracle 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 HTTPS to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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

2026-09-07

NVD

CVE-2026-70727

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 with network access via HTTPS to read a subset of data accessible in Helidon. The impact is limited to confidentiality breaches without affecting integrity or availability.

Detection Guidance

This vulnerability affects Oracle Helidon 3.2.18 via the Imperative Web Server component. Detection requires checking the installed version of Helidon. Use commands like 'java -jar helidon.jar --version' or inspect package managers (e.g., 'dpkg -l | grep helidon' or 'rpm -qa | grep helidon') to verify if version 3.2.18 is present.

Impact Analysis

If you use Helidon 3.2.18, an attacker could exploit this to read sensitive data stored or processed by the Imperative Web Server component. This may lead to unauthorized access to confidential information.

Compliance Impact

This vulnerability could lead to unauthorized data access, potentially violating GDPR (data protection) and HIPAA (health information privacy) by exposing sensitive personal or health data.

Mitigation Strategies

Upgrade Helidon to a version unaffected by this vulnerability. If upgrading is not immediately possible, restrict network access to the Imperative Web Server component via firewall rules or network segmentation to limit exposure.

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