CVE-2026-70716

Modified Modified - Updated After Analysis

Unauthenticated Data Modification 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 3.0.0-3.2.17 and 4.0.0-4.4.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Helidon accessible data. CVSS 3.1 Base Score 5.9 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/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-2026-70716

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 vulnerability affects Oracle Fusion Middleware's Helidon product, specifically version 4.5.0. It allows an unauthenticated attacker to remotely exploit the Imperative Web Server component via HTTP. The attack can lead to unauthorized modifications of critical or all accessible data within Helidon.

Detection Guidance

Detecting this vulnerability requires checking for vulnerable versions of Oracle Helidon 4.5.0. Inspect installed Helidon packages using commands like 'mvn dependency:tree' for Java projects or 'dpkg -l' for Debian-based systems. Monitor network traffic for unusual HTTP requests targeting Helidon endpoints.

Impact Analysis

If you use Helidon 4.5.0, an attacker could alter or delete sensitive data without authentication. This could disrupt services, corrupt data, or lead to unauthorized access to critical information stored in the system.

Compliance Impact

This vulnerability could violate compliance with GDPR and HIPAA by enabling unauthorized data modification or deletion. Such breaches may result in legal penalties, loss of trust, and failure to meet regulatory requirements for data integrity and security.

Mitigation Strategies

Upgrade Oracle Helidon to a version unaffected by this vulnerability. Apply network-level controls to restrict HTTP access to Helidon endpoints. Review and restrict data modification permissions for Helidon services. Monitor critical data for unauthorized changes.

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