CVE-2026-101570: Low severity Oracle Helidon vulnerability
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webserver-http2). Supported versions that are affected are 4.0.0-4.5.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed?
Oracle Helidon deployments using the helidon-webserver-http2 component in supported versions 4.0.0 through 4.5.5 are affected. Exposure requires network access to the service over HTTP/2.
Does exploitation require authentication or user interaction?
No. An unauthenticated attacker can attempt exploitation remotely over the network, and no user interaction is required; however, the vulnerability is described as difficult to exploit.
What is the expected impact if exploitation succeeds?
Successful exploitation can cause a partial denial of service in Helidon. The stated impact is limited to availability, with no confidentiality or integrity impact identified.