UBUNTU-CVE-2026-91379: Medium severity ubuntu/openjdk-8 vulnerability
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JDK tools). Supported versions that are affected are Oracle Java SE: 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 creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability 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. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 4.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~18.04.1 - Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~20.04.1 - Upgrade
Upgrade
ubuntu/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5.0.3+1-1~22.04.1 - Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~22.04.1 - Upgrade
Upgrade
ubuntu/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5.0.3+1-1~24.04.1 - Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~24.04.1 - Upgrade
Upgrade
ubuntu/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5.0.3+1-1~26.10.1 - Upgrade
Upgrade
ubuntu/openjdk-27to a version that resolves this vulnerability.Fixed in 27.0.1.0.3+1-1~26.10.1 - Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~26.10.1 - Upgrade
Upgrade
ubuntu/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5.0.3+1-1~26.04.1 - Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~26.04.1 - Compensating control
Configure Java deployments to load and run only trusted code, such as code installed by an administrator, rather than untrusted code from the internet.
Event History
Frequently Asked Questions
Which deployments are most exposed?
The vulnerability applies primarily to client Java deployments that run sandboxed Java Web Start applications or sandboxed Java applets, load untrusted code such as code from the internet, and rely on the Java sandbox for isolation.
What does an attacker need to exploit this issue?
The attacker must have logon access to the infrastructure where the affected Java or GraalVM product runs. Exploitation is described as difficult and also requires interaction by someone other than the attacker.
What is the potential impact of a successful attack?
A successful attack can allow unauthorized creation, deletion, or modification of critical data or of data accessible to the affected Java or GraalVM deployment. The supplied vector indicates integrity impact, with no confidentiality or availability impact listed.
How can teams assess whether their environment is in scope?
Review whether affected Java deployments execute sandboxed Java Web Start applications or applets containing untrusted code. The affected product versions listed include Oracle Java SE 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27; GraalVM for JDK 17.0.20.1 and 21.0.12.1; and GraalVM Enterprise Edition 21.3.19.1.1.