CVE-2026-73883

Received Received - Intake

Unauthenticated Data Access in Helidon

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 3.2.18. 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

Probability:
Percentile:

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-2026-73883

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	3.2.18

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability affects Oracle Fusion Middleware's Helidon product, specifically version 3.2.18. It allows an unauthenticated attacker to remotely access the Imperative Web Server component via HTTP. Successful exploitation could lead to unauthorized access to sensitive data stored or processed by Helidon.

Detection Guidance

To detect this vulnerability, scan for Oracle Helidon 3.2.18 running on your network. Use tools like Nmap to identify exposed HTTP services and check version details. Example command: nmap -sV --script=http-vuln* <target_IP>. Verify if the service matches the affected version.

Impact Analysis

If you use Helidon 3.2.18, an attacker could gain access to critical or all accessible data in your system. This may result in data breaches, loss of confidential information, or further network compromise depending on the exposed data.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's security requirements. Organizations may face legal penalties, reputational damage, and mandatory breach notifications if exploited.

Mitigation Strategies

Immediately upgrade Oracle Helidon to a version beyond 3.2.18. If upgrading is not possible, restrict network access to the Helidon HTTP service using firewalls or disable the service if unused. Apply network segmentation to limit exposure.

Hi! I’m here to help you understand CVE-2026-73883. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70