Live › vulnerability › CVE-2026-101587
Go to dashboardHelidon's HTTP/1 web client component (helidon-webclient-http1) affects versions 4.0.0 through 4.5.5 and 27.0.0, according to the sources. An unauthenticated attacker with network access over HTTP can cause a partial denial of service, with no confidentiality or integrity impact.
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.
Applications that use the Helidon HTTP/1 web client to make outbound HTTP calls, in the affected version ranges, are potentially exposed. The sources do not describe which request path triggers the flaw, so unknown whether only specific client usage is reachable. Teams not using Helidon, or running versions outside the listed ranges, can skip it.
No product ranges from the sources yet.
pom.xml or build.gradle) and look for helidon-webclient-http1 in the dependency treemvn dependency:tree | grep helidon-webclient-http1 or the Gradle equivalent to confirm the resolved versionhelidon-webclient-http1 and related Helidon artifacts to a version outside the affected ranges 4.0.0-4.5.5 and 27.0.0; the sources do not name the fixed versionEach 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-http1). 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 ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
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