CVE-2026-73937

HighCVSS 8.2

Published: 18/08/2026(UTC)Updated: 19/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.41%

34th percentile - higher than 34% of all known CVEs

Summary

Helidon version 4.5.0 (component: Imperative Web Server) has an easily exploitable vulnerability allowing an unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks can cause a hang or frequently repeatable crash (complete DoS) and unauthorized read access to a subset of Helidon accessible data. CVSS 8.2.

Risk Assessment

An attacker can cause service unavailability and gain access to some data, potentially leading to confidentiality and availability breaches.

Recommendation

Apply vendor-provided patches or upgrade Helidon to a fixed version.

Original NVD description (English source)

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable 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 hang or frequently repeatable crash (complete DOS) of Helidon and unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H).