Live › vulnerability › CVE-2026-83376
Go to dashboardA flaw in the JSSE (Java Secure Socket Extension) component of Oracle Java SE and GraalVM lets an unauthenticated attacker over TLS make unauthorized changes to some accessible data. The sources rate it low (CVSS 3.7, integrity impact only) and say exploitation is difficult.
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.
Systems running the listed Oracle Java SE, GraalVM for JDK or GraalVM Enterprise versions where a network service passes untrusted input to JSSE APIs over TLS, or where Java applets or Web Start apps run untrusted code. Teams that run only unaffected versions or no Java workloads can skip it.
No product ranges from the sources yet.
java -version and compare the output against the affected versions: 8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27 (Oracle Java SE) and 17.0.20.1, 21.0.12.1 (GraalVM for JDK), 21.3.19.1.1 (GraalVM Enterprise).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: JSSE). 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 network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. 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. 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 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).
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