CVE-2026-73904: Medium severity Oracle Helidon vulnerability
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. 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. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed to this issue?
Helidon Imperative Web Server deployments running the supported affected version 4.5.1 are exposed when they are reachable over HTTP. The vulnerability can be exploited remotely over the network.
Does exploitation require authentication or user interaction?
No. An unauthenticated attacker can exploit the issue with network access via HTTP, and no user interaction is required.
What could an attacker gain through successful exploitation?
A successful attack can allow unauthorized read access to a subset of Helidon-accessible data and unauthorized update, insert, or delete access to some Helidon-accessible data. Availability impact is not indicated.