CVE-2026-73897

Modified Modified - Updated After Analysis

Unauthenticated Data Access in 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 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 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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

2026-09-06

NVD

CVE-2026-73897

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 is a vulnerability in Oracle Fusion Middleware's Helidon product, specifically in the Imperative Web Server component. It affects version 4.5.0 and allows unauthenticated attackers to remotely access and manipulate data through HTTP requests. The impact includes unauthorized read, update, insert, or delete access to some Helidon data.

Detection Guidance

Since no specific detection methods or commands are provided in the CVE details, general approaches include checking for vulnerable Helidon versions (4.5.0) via package managers or logs. Monitor HTTP traffic for unusual requests targeting Helidon endpoints. Ensure network scanners are updated to detect Oracle Fusion Middleware components.

Impact Analysis

An attacker could exploit this to access or modify sensitive data stored in Helidon without authentication. This could lead to data breaches, unauthorized changes, or loss of data integrity. The impact is limited to data accessible through Helidon but could be significant depending on the data stored.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating confidentiality and integrity requirements in GDPR and HIPAA. Organizations using Helidon 4.5.0 may face compliance violations, potential fines, and reputational damage if exploited.

Mitigation Strategies

Update Helidon to a version that is not affected by this vulnerability. If an update is not available, consider disabling the Imperative Web Server component or restricting network access to it until a patch is applied.

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