CVE-2026-73871: Medium severity Oracle Helidon (Imperative Web Server) vulnerability

Published Aug 18, 2026

Updated

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 read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Affected Software

2 affected components

Oracle Helidon (Imperative Web Server)=3.2.18

Oracle Helidon=3.2.18

Event History

Aug 18, 2026

CVE Published

via MITRE·09:03 PM

Data Sourced

via MITRE·09:03 PM

DescriptionSeverity

Data Sourced

via NVD·09:18 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

Who can exploit this issue?

An unauthenticated attacker with network access to the affected Helidon Imperative Web Server over HTTP can exploit it. No user interaction or prior privileges are required.

What impact can successful exploitation have?

Successful exploitation can provide unauthorized read access to a subset of data accessible through Helidon. The stated CVSS impacts are limited to confidentiality; integrity and availability are not affected.

Which version is identified as affected?

The affected supported version identified is Helidon 3.2.18.