CVE-2026-73896: Medium 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/2 to compromise Helidon. Successful attacks of this vulnerability can result in 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 6.5 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L).
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An unauthenticated attacker with network access to the affected Helidon Imperative Web Server over HTTP/2 can exploit it. No privileges or user interaction are required.
Which deployment is known to be affected?
The affected supported version identified is Helidon Imperative Web Server 4.5.0. The provided information does not state whether HTTP/2 is enabled by default or identify other affected versions.
What is the potential impact of successful exploitation?
Successful exploitation can allow unauthorized reading of a subset of data accessible through Helidon and can cause a partial denial of service. The vulnerability has confidentiality and availability impact, with no integrity impact stated.