EUVD-2026-79628
GHSA-hh8r-222q-x7qh
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from Vendor (oracle) · only source for this CVE.
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-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).
AnalysisAI
Unauthenticated HTTP/2 traffic can hang or repeatedly crash Oracle Helidon versions 4.0.0 through 4.5.4 through a flaw in the helidon-webclient-http2 component, giving a full denial-of-service of the affected service. The issue is network-reachable with no credentials and no user interaction (CVSS 3.1 base 7.5, availability-only impact). …
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Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
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External POC / Exploit Code
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