CVE-2026-71166

CriticalCVSS 9.4

Published: 18/08/2026(UTC)Updated: 28/08/2026(UTC)Translated: 28/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.42%

35th percentile - higher than 35% of all known CVEs

Summary

Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.17. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data, unauthorized access to data, and cause partial denial of service. CVSS score 9.4.

Risk Assessment

Attack can lead to integrity and confidentiality breaches and partial service unavailability, potentially disrupting operations.

Recommendation

Apply available security patches for Helidon versions 3.0.0-3.2.17. Restrict network access to the server to trusted sources only.

Other vulnerabilities in Helidon

See all

Original NVD description (English source)

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 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 and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 9.4 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS