Vulnerability · Published Jan 20, 2026 · Assigned by oracle
CVE-2026-21947
Low 3.1
In plain English
A low-severity cross-site scripting in Oracle Java SE from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | openjfx | no fix listed | UBUNTU-CVE-2026-21947 |
| Ubuntu:24.04:LTS | openjfx | no fix listed | UBUNTU-CVE-2026-21947 |
| Ubuntu:25.10 | openjfx | no fix listed | UBUNTU-CVE-2026-21947 |
| Ubuntu:26.04:LTS | openjfx | no fix listed | UBUNTU-CVE-2026-21947 |
| Ubuntu:26.10 | openjfx | no fix listed | UBUNTU-CVE-2026-21947 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Oracle Corporation | Oracle Java SE | 8u471-b50 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N