CVE-2026-73923

Modified Modified - Updated After Analysis

Unauthenticated Data Manipulation 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 1.0.0-1.4.19. Difficult to exploit 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. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/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-2026-73923

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	1.4.20

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 1.4.20 and allows an unauthenticated attacker with network access via HTTP to potentially modify data in Helidon.

Detection Guidance

This vulnerability affects Oracle Helidon 1.4.20 via the Imperative Web Server component. Detection requires checking the installed version of Helidon. Use commands like 'java -jar helidon.jar --version' or inspect application logs for Helidon server startup details. If version 1.4.20 is found, the system is vulnerable.

Impact Analysis

An attacker could exploit this to perform unauthorized updates, inserts, or deletes on some data accessible through Helidon. This could lead to data corruption or loss of integrity for affected systems.

Compliance Impact

This vulnerability could impact compliance by allowing unauthorized data modifications, which may violate integrity requirements in GDPR or HIPAA. Organizations using affected Helidon versions should assess potential compliance risks.

Mitigation Strategies

Upgrade Helidon to a version later than 1.4.20 to address the vulnerability. Apply patches or updates provided by Oracle as soon as possible.

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