Live › vulnerability › CVE-2026-91477
Go to dashboardOracle JavaFX versions 25.0.4 and 27 have a flaw that lets an unauthenticated attacker over the network read a subset of data the library can access. Exploitation is hard and needs a user to act, and the note says it applies mainly to clients running untrusted sandboxed Java Web Start or applet code.
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.
Clients running sandboxed Java Web Start applications or sandboxed Java applets that load and run untrusted code from the internet, relying on the Java sandbox. The sources say the issue does not apply to server deployments that run only trusted code installed by an administrator.
No product ranges from the sources yet.
java -version and check the JavaFX version bundled or on the classpath against 25.0.4 and 27Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Vulnerability in the Oracle JavaFX product of Oracle Java SE (component: JavaFX). Supported versions that are affected are Oracle JavaFX: 25.0.4 and 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle JavaFX. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle JavaFX 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 3.1 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N).
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