Live › vulnerability › CVE-2026-91333
Go to dashboardA flaw in the Security component of Oracle Java SE lets an unauthenticated attacker over the network change or delete some data the Java application can reach. The attack is hard to carry out, and the sources report only an integrity impact with a CVSS score of 3.7.
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 releases that expose Java APIs to network input, such as a web service feeding data into them, are the ones to look at. The description also applies to client machines that run untrusted sandboxed applets or Web Start apps relying on the Java sandbox. Teams on other runtimes or with no Java in their stack can skip it.
No product ranges from the sources yet.
java -version and compare against the affected releases 21.0.12.1, 25.0.4.1 and 27.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Vulnerability in Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE 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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