CVE-2026-73894

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 and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-73894

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 exploit it via HTTP. The flaw enables unauthorized data access (read, update, insert, delete) and partial denial of service (DOS) attacks.

Detection Guidance

Since no specific detection methods or commands are provided in the CVE details, general vulnerability scanning tools like Nmap, Nessus, or OpenVAS can be used to check for vulnerable versions of Oracle Helidon 4.5.0. Ensure your Helidon instances are updated to a patched version.

Impact Analysis

If you use Helidon 4.5.0, an attacker could access, modify, or delete sensitive data without authentication. They could also disrupt service availability, leading to downtime or degraded performance for your applications.

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

Update Helidon to a version unaffected by this vulnerability. If immediate update is not possible, restrict network access to the Imperative Web Server component via firewall rules or network segmentation to limit exposure.

Hi! I’m here to help you understand CVE-2026-73894. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70