CVE-2026-71161

Modified Modified - Updated After Analysis

Denial of Service 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 3.0.0-3.2.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

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

2026-09-07

NVD

CVE-2026-71161

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	3.2.18

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 vulnerability affects Oracle Fusion Middleware's Helidon product, specifically version 3.2.18. It allows an unauthenticated attacker to cause a partial denial of service (DOS) by exploiting the Imperative Web Server component through HTTP network access.

Detection Guidance

Detecting this vulnerability requires checking if your system is running Oracle Helidon version 3.2.18. Use commands like 'java -jar helidon.jar --version' or check application logs for Helidon framework references. Monitor network traffic for HTTP requests targeting Helidon services.

Impact Analysis

An attacker could exploit this to disrupt the availability of the Helidon service, leading to partial outages or degraded performance. This may affect applications relying on Helidon for web services.

Compliance Impact

This vulnerability causes a partial denial of service in the Helidon product, which could disrupt availability of services. While it does not directly impact confidentiality or integrity, availability issues may affect compliance with standards requiring system uptime or data accessibility, such as GDPR's data processing requirements or HIPAA's availability rules.

Mitigation Strategies

Upgrade Oracle Helidon to a version later than 3.2.18. Apply patches from Oracle as soon as they are available. Restrict network access to Helidon services via firewalls or network segmentation. Monitor for unusual HTTP traffic patterns indicating exploitation attempts.

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