CVE-2026-73931

Received Received - Intake

Unauthenticated Partial DoS 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 4.5.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). 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 and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L).

CVSS Scores

EPSS Scores

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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-2026-73931

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	4.5.3

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 4.5.3 and allows unauthenticated attackers to exploit it via HTTP network access. The flaw enables unauthorized data access (read, update, insert, delete) and partial denial of service (DOS) attacks.

Impact Analysis

An attacker could gain unauthorized access to sensitive data stored in Helidon, modify or delete data, or disrupt service availability. Since Helidon is part of Oracle Fusion Middleware, impacts may extend to other connected systems, potentially affecting broader IT infrastructure.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements or HIPAA's safeguards for protected health information. Non-compliance risks include legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Update Helidon to a version unaffected by this vulnerability. If immediate update is not possible, restrict network access to the Imperative Web Server component via firewall rules or network segmentation to limit exposure.

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