CVE-2026-73888

Modified Modified - Updated After Analysis

Unauthenticated Data Read 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 read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

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-2026-73888

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 access some data through HTTP requests. The impact is limited to unauthorized read access to a subset of accessible data.

Detection Guidance

This vulnerability affects Oracle Helidon 4.5.0 via an unauthenticated HTTP network access vector. To detect it, check if your system is running Helidon 4.5.0 and verify if HTTP endpoints are exposed without authentication. Use commands like 'curl -I http://<target-ip>:' to inspect server responses or 'netstat -tulnp | grep LISTEN' to check open ports. Ensure no unauthorized read access to data is possible.

Impact Analysis

If you use Helidon 4.5.0, an attacker could exploit this to read some of your system's data without authentication. This could lead to exposure of sensitive information, though the scope is limited to a subset of accessible data.

Compliance Impact

This vulnerability could potentially violate compliance requirements like GDPR or HIPAA by allowing unauthorized access to sensitive data. Organizations using Helidon 4.5.0 may need to assess their exposure and implement mitigations to maintain compliance.

Mitigation Strategies

Upgrade Helidon to a version unaffected by this vulnerability. If upgrading is not immediately possible, restrict network access to the Imperative Web Server component via firewall rules or network segmentation.

Hi! I’m here to help you understand CVE-2026-73888. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70