CVE-2026-71159: High severity Oracle Helidon vulnerability
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 access to critical data or complete access to all Helidon accessible data as well as unauthorized update, insert or delete access to some of Helidon accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Helidon deployments using the Imperative Web Server component on supported version 3.2.18 are affected. The attack can be conducted remotely over HTTP against a reachable instance.
Does exploitation require authentication or user interaction?
No. An unauthenticated attacker with network access can exploit the issue, and no user interaction is required.
What is the potential impact of a successful attack?
An attacker may gain unauthorized access to critical data or all data accessible to Helidon. They may also be able to update, insert, or delete some Helidon-accessible data.