CVE-2026-73938

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 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 access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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

2026-09-06

NVD

CVE-2026-73938

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 Helidon 4.5.0's Imperative Web Server component. It allows an unauthenticated attacker to remotely access the system via HTTP and potentially steal sensitive data or gain full access to all accessible data in Helidon.

Detection Guidance

To detect this vulnerability, check if your system is running Helidon version 4.5.0. Use commands like 'curl -v http://<target>:<port>/' to inspect server responses or 'netstat -tulnp | grep <port>' to verify open ports. Monitor logs for unusual HTTP access patterns.

Impact Analysis

If exploited, this vulnerability could lead to unauthorized access to critical or all accessible data in the affected Helidon system. This may result in data breaches, loss of sensitive information, or further system compromise depending on the exposed data.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Upgrade Helidon to a version unaffected by this vulnerability. If immediate upgrade isn't possible, restrict network access to the Imperative Web Server via firewalls or disable HTTP access until patched.

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