CVE-2026-73869

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 3.0.0-3.2.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks require human interaction from a person other than the attacker and 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 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-2026-73869

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 is a vulnerability in Oracle Fusion Middleware's Helidon product, specifically in the Imperative Web Server component. It affects version 3.2.18 and allows unauthenticated attackers to exploit it via HTTP network access. The attack requires human interaction from someone other than the attacker and can impact additional products. Successful exploitation can lead to unauthorized data access or modification.

Detection Guidance

Detecting this vulnerability requires checking for vulnerable versions of Oracle Helidon 3.2.18. Inspect installed Helidon packages using commands like 'dpkg -l | grep helidon' on Debian/Ubuntu or 'rpm -qa | grep helidon' on RHEL-based systems. Review application logs for unusual HTTP requests targeting Helidon endpoints.

Impact Analysis

An attacker could gain unauthorized read access to some of your Helidon data or modify it without authentication. This could lead to data breaches, information leaks, or corrupted data. The impact is limited to Helidon-accessible data but may extend to other products due to scope change.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection principles or HIPAA's security requirements. Organizations using Helidon may face compliance violations, legal penalties, or reputational damage if exploited.

Mitigation Strategies

Update Helidon to a version that is not affected by this vulnerability. Since the affected version is 3.2.18, check for and apply any available patches or upgrades from Oracle. Disable unnecessary HTTP access to the Imperative Web Server component if possible.

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