CVE-2026-83280

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webserver-http2). Supported versions that are affected are 4.0.0-4.5.4. 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. 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).

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.oracle.com/security-alerts/cspusep2026.html	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:oracle:helidon:*:*:*:*:*:*:*:*

History

28 Sep 2026, 15:14

Type	Values Removed	Values Added
References	~~() https://www.oracle.com/security-alerts/cspusep2026.html -~~	() https://www.oracle.com/security-alerts/cspusep2026.html - Vendor Advisory
CPE		cpe:2.3:a:oracle:helidon::::::::
First Time		Oracle Oracle helidon

Information

Published : 2026-09-15 20:18

Updated : 2026-09-28 15:14

NVD link : CVE-2026-83280

Mitre link : CVE-2026-83280

CVE.ORG link : CVE-2026-83280

JSON object : View

Products Affected

oracle

helidon

CWE

CWE-400

Uncontrolled Resource Consumption

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