UBUNTU-CVE-2026-91418: Medium severity ubuntu/openjdk-8 vulnerability
Vulnerability in the Oracle Java SE, Oracle JavaFX, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: ImageIO). 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 JavaFX: 21.0.12, 25.0.4, 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 JavaFX, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle JavaFX, 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 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).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~16.04.1 - Upgrade
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ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~18.04.1 - Upgrade
Upgrade
ubuntu/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~18.04.1 - 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-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~20.04.1 - 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-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~22.04.1 - 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-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~24.04.1 - 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-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~26.10.1 - 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-8to a version that resolves this vulnerability.Fixed in 8u512-b09~us1-0ubuntu1~26.04.1 - Upgrade
Upgrade
ubuntu/openjdk-ltsto a version that resolves this vulnerability.Fixed in 11.0.33+9-1ubuntu1~26.04.1
Event History
Frequently Asked Questions
Does exploitation require authentication or user interaction?
No. The vulnerability is described as easily exploitable by an unauthenticated attacker with network access, with no user interaction required.
Which deployment patterns are most exposed?
Systems that pass network-supplied data to ImageIO APIs, such as web services, are specifically identified as exploitable. Client Java deployments that run untrusted code in sandboxed Java Web Start applications or sandboxed Java applets are also affected.
What is the expected impact of a successful attack?
A successful attack can cause a partial denial of service affecting the vulnerable Java, JavaFX, or GraalVM deployment. The provided severity vector indicates no confidentiality or integrity impact.