Unauthorized Data Access in Helidon via HTTP

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Oracle

Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows low privileged 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 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-18

Last Modified

2026-08-18

Generated

2026-08-19

AI Q&A

2026-08-19

EPSS Evaluated

N/A

NVD

CVE-2026-73874

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	4.5.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

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 a low-privileged attacker with network access via HTTP to compromise the system. The vulnerability enables unauthorized data access and modifications, including read, update, insert, or delete operations on some Helidon accessible data.

Impact Analysis

If exploited, this vulnerability could allow attackers to access or modify sensitive data within the Helidon system. This may lead to data breaches, unauthorized changes to critical information, or potential disruption of services relying on the Imperative Web Server component.

Mitigation Strategies

Apply the latest security patches or updates for Oracle Helidon version 4.5.0. If patches are unavailable, consider upgrading to a newer, supported version. Restrict network access to the Imperative Web Server component and monitor HTTP traffic for suspicious activity.

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