CVE-2026-21947: XSS

Published Jan 20, 2026
·
Updated

Vulnerability in Oracle Java SE (component: JavaFX). Supported versions that are affected are Oracle Java SE: 8u471-b50. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks require human interaction from a person other than the attacker. 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 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 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N).

Affected Software

3 affected components
Oracle Java SE
Oracle JDK=1.8.0-update471_b50
Oracle JRE=1.8.0-update471_b50

Event History

Jan 20, 2026
CVE Published
via MITRE·09:56 PM
Data Sourced
via MITRE·09:56 PM
DescriptionSeverity
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software
Feb 19, 58052
Event
via FIRST·02:14 PM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-21947?

CVE-2026-21947 is considered a difficult to exploit vulnerability that poses a risk to Oracle Java SE.

2

How do I fix CVE-2026-21947?

To address CVE-2026-21947, users should update Oracle Java SE to the latest version provided by Oracle.

3

What versions of Oracle Java SE are affected by CVE-2026-21947?

CVE-2026-21947 affects Oracle Java SE version 8u471-b50.

4

Who can exploit CVE-2026-21947?

CVE-2026-21947 can potentially be exploited by an unauthenticated attacker with network access.

5

What components of Oracle are impacted by CVE-2026-21947?

CVE-2026-21947 specifically affects the JavaFX component of Oracle Java SE.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203