CVE-2026-73900

Modified Modified - Updated After Analysis

Information Disclosure 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 4.0.0-4.5.0. 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

2026-09-06

NVD

CVE-2026-73900

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	4.5.1

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

Detection Guidance

Since no specific detection methods or commands are provided in the CVE details, you may need to check if your system is running Helidon version 4.5.1 or affected versions. Monitor network traffic for unusual HTTP requests targeting Helidon services. Ensure your Helidon instances are updated to a patched version.

Impact Analysis

An attacker could exploit this to access sensitive data stored in the Helidon system, potentially leading to data breaches or unauthorized information disclosure.

Compliance Impact

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

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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