CVE-2026-47013

Analyzed Analyzed - Analysis Complete

Denial of Service in Oracle Java SE

Publication date: 2026-07-21

Last updated on: 2026-07-31

Assigner: Oracle

Description

Vulnerability in Oracle Java SE (component: JavaFX). The supported version that is affected is Oracle Java SE: 8u491. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE. 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).

CVSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-31

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-47013

EUVD

EUVD-2026-46502

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	jre	1.8.0
oracle	jdk	1.8.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Java SE, specifically in the JavaFX component. It affects version 8u491 and allows an unauthenticated attacker with network access to cause a partial denial of service (DOS) in Oracle Java SE. The attack can be executed via multiple protocols and may involve using APIs in JavaFX or through web services supplying data to these APIs.

Detection Guidance

Detection involves checking for vulnerable Oracle Java SE versions. Use commands like 'java -version' to verify installed versions. Ensure Java SE 8u491 is not present. Monitor network traffic for unusual activity targeting JavaFX APIs or web services.

Impact Analysis

If you use Oracle Java SE 8u491, an attacker could exploit this flaw to disrupt the availability of your Java applications, leading to partial service outages. This is particularly relevant for systems running sandboxed Java Web Start applications or applets that load untrusted code from the internet.

Compliance Impact

This vulnerability causes a partial denial of service (DOS) in Oracle Java SE, which could disrupt system availability. While it does not directly impact data confidentiality or integrity, prolonged unavailability may affect compliance with standards requiring continuous access to critical systems, such as HIPAA for healthcare data or GDPR for timely data processing.

Mitigation Strategies

Immediately update Oracle Java SE to a non-vulnerable version. Remove or disable Java Web Start applications and sandboxed Java applets if not required. Restrict network access to JavaFX APIs and monitor for partial denial of service attempts.

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