CVE-2026-73928

Modified Modified - Updated After Analysis

Unauthenticated Data Access 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 4.0.0-4.5.2. Easily exploitable 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 update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 7.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).

CVSS 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-2026-73928

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	4.5.3

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 4.5.3. An unauthenticated attacker can exploit it remotely via HTTP to gain unauthorized access to data, including read, update, insert, or delete operations on some Helidon accessible data.

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 4.5.3. Ensure your systems are updated to the latest non-vulnerable version.

Impact Analysis

If exploited, this vulnerability allows attackers to access, modify, or delete data in the Helidon system without authentication. This could lead to data breaches, unauthorized changes to sensitive information, or further compromise of connected systems.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Non-compliance may result in legal penalties, fines, or reputational damage.

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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