CVE-2026-91397
LowCVSS 3.6Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
Vulnerability in the Serviceability component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It is difficult to exploit, requires logon to the infrastructure and human interaction, and can lead to unauthorized update, insert or delete access to data and partial denial of service.
Risk Assessment
The risk is limited due to the high attack complexity and user interaction requirement, but successful exploitation can affect data integrity and availability of Java applications. Environments that load and run untrusted code, such as sandboxed Java Web Start applications or applets, are particularly exposed.
Recommendation
Update Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition to versions containing the fix for CVE-2026-91397. Restrict execution of untrusted Java code and control logon access to the infrastructure running these environments.
Other vulnerabilities in Oracle Java SE
See all- CVE-2026-91382Medium
Vulnerability in Oracle Java SE, Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition (component: 2D) affecting versions such as 8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1 and 21.3.19.1.1. A difficult-to-exploit flaw allows an unauthenticated attacker with network access via multiple protocols to impact data integrity and cause partial denial of service.
- CVE-2026-91381Low
Vulnerability in Oracle Java SE and Oracle GraalVM Enterprise Edition (2D component) affecting versions 8u503, 8u503-perf, and 21.3.19.1.1. A difficult-to-exploit flaw allows an unauthenticated network attacker to modify, insert, or delete some data; also applies to sandboxed Java Web Start/applet deployments.
- CVE-2026-91380Medium
Vulnerability in the Utility component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. This difficult-to-exploit flaw allows an unauthenticated attacker with logon access to the infrastructure to gain unauthorized update, insert, or delete access and unauthorized read access to a subset of data. It can be exploited through APIs in the component, e.g., via a web service supplying data, and also affects Java deployments running untrusted code in a sandbox.
- CVE-2026-91379Medium
Vulnerability in Oracle Java SE, Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition (component: JDK tools) affecting versions such as 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1 and 27. A difficult-to-exploit flaw requires logon to the infrastructure and human interaction and can lead to unauthorized data modification.
- CVE-2026-91375Medium
Vulnerability in Oracle Java SE Libraries component involves difficult-to-exploit attacks requiring logon to the infrastructure and user interaction. Successful exploitation may allow unauthorized creation, deletion, or modification of critical data.
- CVE-2026-91374Medium
Vulnerability in the Serviceability component of Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition allows a difficult-to-exploit network attack. It may result in unauthorized update, insert, or delete access to some data and unauthorized read access to a subset of data.
- CVE-2026-101516Medium
Vulnerability in Oracle Java SE, Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition (component: Libraries) affects multiple supported versions. An easily exploitable flaw allows an unauthenticated attacker with network access via multiple protocols to perform unauthorized update, insert or delete access to some data and unauthorized read access to a subset of data.
- CVE-2016-3552High
Unspecified vulnerability in Oracle Java SE 8u92 allows local users to affect confidentiality, integrity, and availability via vectors related to Install.
- CVE-2016-3449High
Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77 allows remote attackers to affect confidentiality, integrity, and availability via vectors related to Deployment.
- CVE-2015-4901High
An unspecified vulnerability in Oracle Java SE 8u60 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to JavaFX.
Original NVD description (English source)
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).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS