CVE-2026-73938: High severity Oracle Helidon (Imperative Web Server) vulnerability
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed to this issue?
Oracle Helidon deployments using the Imperative Web Server component on the supported affected version, 4.5.0, are exposed if they are reachable over HTTP from an attacker with network access.
Does exploitation require credentials or user interaction?
No. The vulnerability is described as easily exploitable by an unauthenticated attacker with network access via HTTP, and it requires neither privileges nor user interaction.
What is the likely impact of a successful attack?
A successful attack can provide unauthorized access to critical data or complete access to all data accessible to Helidon. The stated impact is confidentiality only; integrity and availability impacts are rated none.