CVE-2026-73917: Critical severity Oracle Helidon (Oracle Fusion Middleware - 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 creation, deletion or modification access to critical data or all Helidon accessible data as well as unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Helidon deployments using the affected supported version 4.5.0 are exposed if they are reachable by an attacker over HTTP. The issue is in the Imperative Web Server component of Oracle Fusion Middleware.
Does exploitation require authentication or user interaction?
No. The vulnerability is described as easily exploitable by an unauthenticated attacker with network access via HTTP, and it requires no user interaction.
What could an attacker do after successful exploitation?
An attacker could obtain unauthorized access to critical data or all data accessible to Helidon. They could also create, delete, or modify critical data or all Helidon-accessible data.