CVE-2026-73906

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 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP 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-2026-73906

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	4.5.0

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 4.5.0. It allows an unauthenticated attacker to remotely access the system via HTTP and read a subset of accessible data without needing credentials.

Detection Guidance

Since no specific detection methods or commands are provided in the CVE details, general network scanning tools like Nmap or vulnerability scanners such as Nessus or OpenVAS can be used to check for vulnerable versions of Oracle Helidon 4.5.0. Monitor HTTP traffic for unusual access patterns targeting Helidon services.

Impact Analysis

An attacker could exploit this to gain unauthorized read access to sensitive data stored or processed by the Helidon server, potentially leading to data breaches or information leaks.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR's data protection principles and HIPAA's security requirements for safeguarding protected health information.

Mitigation Strategies

Upgrade Helidon to a version later than 4.5.0 as it is the affected version. Apply any available patches from Oracle immediately. Restrict network access to the Imperative Web Server component via firewall rules until patched.

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