CVE-2026-73873

Received Received - Intake

Denial of Service in Oracle 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. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/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-2026-73873

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 is a vulnerability in Oracle Fusion Middleware's Helidon product, specifically in the Imperative Web Server component. It affects version 3.2.18 and allows a low-privileged attacker with network access via HTTP to potentially read, insert, update, or delete some data accessible by Helidon.

Detection Guidance

Detecting this vulnerability requires checking for vulnerable versions of Oracle Helidon 3.2.18. Inspect installed Helidon packages using commands like 'java -jar helidon.jar --version' or package managers like 'dpkg -l | grep helidon' or 'rpm -qa | grep helidon'.

Impact Analysis

An attacker could exploit this to access or modify sensitive data that Helidon handles. This could lead to data breaches, unauthorized changes to data, or other security incidents depending on the data processed by Helidon.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations using Helidon 3.2.18 should address this to avoid potential legal and regulatory penalties.

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 data access patterns.

Hi! I’m here to help you understand CVE-2026-73873. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70