Live › vulnerability › CVE-2026-91397
Go to dashboardA flaw in the Serviceability component of Oracle Java SE and GraalVM lets an attacker who can reach the runtime change some data or partly disrupt the service. Exploitation is hard and needs a person other than the attacker to take an action, such as a user running untrusted Java code.
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 that run the affected Oracle Java SE or GraalVM builds on servers, clients or build hosts are exposed. Exposure is greater where Java applets or Web Start applications run untrusted code, since the sandbox is the defence. Teams on other JDK distributions or on patched Oracle releases can skip it.
No product ranges from the sources yet.
java -version and compare the output against the affected versions listed in the Oracle advisory.native-image --version or java -version and check against 21.3.19.1.1, 17.0.20.1 or 21.0.12.1.8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1 or 25.0.4.1, or a later release.17.0.20.1 or 21.0.12.1, and Oracle GraalVM Enterprise Edition to a patched build after 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: Serviceability). 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. Difficult to exploit vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition executes to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks require human interaction from a person other than the attacker. 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 and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 3.6 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L).
This page as .md · .json · in your agent: get_signal("CVE-2026-91397")
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