CVE-2026-73887: High severity Oracle Helidon (Oracle Fusion Middleware) 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/2 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?
Oracle Helidon in Oracle Fusion Middleware using the Imperative Web Server component is affected in supported version 4.5.0. Exposure requires network access to the service over HTTP/2.
Does an attacker need credentials or user interaction?
No. The vulnerability is described as easily exploitable by an unauthenticated attacker with network access, and the CVSS vector indicates no privileges and no user interaction are required.
What is the potential impact of successful exploitation?
Successful exploitation can provide unauthorized access to critical data or complete access to all data accessible through Helidon. The stated impact is confidentiality only; integrity and availability impacts are not indicated.