Live › vulnerability › CVE-2026-101586
Go to dashboardHelidon's webclient component, part of Oracle Fusion Middleware, has a flaw in versions 4.0.0 through 4.5.5 and 27.0.0. An unauthenticated attacker with network access over HTTP can read a subset of data the Helidon application can access.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Teams running Helidon services that use the helidon-webclient component in versions 4.0.0 through 4.5.5 or 27.0.0 are exposed. The sources do not describe which HTTP paths or configurations expose the data, so whether a given service is reachable is unknown. Teams on other Helidon versions or not using helidon-webclient can likely skip it.
No product ranges from the sources yet.
io.helidon version in Maven or Gradle) and see whether it falls in 4.0.0 to 4.5.5 or is 27.0.0.4.0.0 to 4.5.5 and 27.0.0; the fixed version is unknown from the sources.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient). Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
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