CVE-2026-70908: High 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 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 ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An unauthenticated attacker with network access to the Helidon Imperative Web Server over HTTP can exploit it. No user interaction or prior privileges are required.
What is the operational impact of a successful attack?
A successful attack can cause Helidon to hang or crash repeatedly, resulting in a complete denial of service. The stated impact is limited to availability; no confidentiality or integrity impact is listed.
Which supported version is identified as affected?
The affected supported version identified is Helidon 3.2.18.