Live › vulnerability › CVE-2026-91453
Go to dashboardA flaw in the Lightweight HTTP Server component of Oracle Java SE and GraalVM lets an unauthenticated network attacker make unauthorized updates, inserts or deletes to some accessible data. The attack works by supplying data to the component's APIs, such as through a web service, and needs no user action.
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 run on the affected Oracle Java SE or GraalVM builds and expose data-handling APIs of the Lightweight HTTP Server component to the network, for example through a web service, are exposed. Teams that do not use that component, or that run only non-affected Java versions, can skip it.
No product ranges from the sources yet.
java -version and compare the output with the affected Java SE releases listed in the advisory.com.sun.net.httpserver).8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1 or 25.0.4.1, depending on your line).17.0.20.1 or 21.0.12.1.21.3.19.1.1.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Lightweight HTTP Server). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).
This page as .md · .json · in your agent: get_signal("CVE-2026-91453")
NVD data is provided by NIST and is public domain · EPSS scores by FIRST, used with attribution. Posts quoted belong to their authors.