CVE-2026-83400: Medium severity Oracle Java SE vulnerability
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JAXP). 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 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 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
debian/openjdk-17to a version that resolves this vulnerability.Fixed in 17.0.21+9-1~deb12u1 - Upgrade
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debian/openjdk-21to a version that resolves this vulnerability.Fixed in 21.0.13+9-1~deb13u2 - Upgrade
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debian/openjdk-21to a version that resolves this vulnerability.Fixed in 21.0.13+9-1 - Upgrade
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debian/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5+8-1~deb13u1 - Upgrade
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debian/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5+8-1 - Upgrade
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alpine/openjdk17to a version that resolves this vulnerability.Fixed in 17.0.21.0.3_p1-r0 - Upgrade
Upgrade
alpine/openjdk21to a version that resolves this vulnerability.Fixed in 21.0.13.0.3_p1-r0 - Upgrade
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alpine/openjdk25to a version that resolves this vulnerability.Fixed in 25.0.5.0.3_p1-r0 - Upgrade
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debian/openjdk-11to a version that resolves this vulnerability.Fixed in 11.0.33+9-1 - Upgrade
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debian/openjdk-17to a version that resolves this vulnerability.Fixed in 17.0.21+9-1~deb12u1Fixed in 17.0.21.0.3+1-1 - Upgrade
Upgrade
debian/openjdk-21to a version that resolves this vulnerability.Fixed in 21.0.13+9-1~deb13u2Fixed in 21.0.13+9-1Fixed in 21.0.13.0.3+1-1 - Upgrade
Upgrade
debian/openjdk-25to a version that resolves this vulnerability.Fixed in 25.0.5+8-1~deb13u1Fixed in 25.0.5+8-1Fixed in 25.0.5.0.3+1-1 - Upgrade
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debian/openjdk-27to a version that resolves this vulnerability.Fixed in 27.0.1.0.3+1-1 - Upgrade
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debian/openjdk-8to a version that resolves this vulnerability.Fixed in 8u512-ga-1
Event History
Frequently Asked Questions
Which deployments are most exposed to this issue?
Network-reachable applications that pass attacker-controlled data to JAXP APIs, including through web services, are exposed. Java client deployments running sandboxed Java Web Start applications or sandboxed applets that load untrusted internet-sourced code and rely on the Java sandbox are also affected.
What does an attacker need to exploit it?
An attacker does not need authentication or user interaction, but needs network access through one of multiple protocols. Exploitation can occur when attacker-controlled data reaches the affected JAXP APIs.
What is the expected impact of successful exploitation?
Successful exploitation can allow an attacker to cause a partial denial of service affecting Oracle Java SE, Oracle GraalVM for JDK, or Oracle GraalVM Enterprise Edition. The supplied CVSS vector indicates no confidentiality or integrity impact.
Which versions are identified as affected?
Affected Oracle Java SE versions are 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27. Affected Oracle GraalVM for JDK versions are 17.0.20.1 and 21.0.12.1, and the affected Oracle GraalVM Enterprise Edition version is 21.3.19.1.1.