CVE-2026-87290
Awaiting Analysis Awaiting Analysis - Queue

XML External Entity Processing Vulnerability in Oracle Java SE

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JAXP). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition 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 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-20
Last Modified
2026-10-27
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-87290
EUVD
EUVD-2026-106331

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a vulnerability in Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition affecting multiple versions. It allows an unauthenticated attacker with network access to potentially access critical data or all accessible data in the affected products. The vulnerability exists in the JAXP component and can be exploited via APIs or web services.

Detection Guidance

This CVE affects Oracle Java SE, GraalVM, and related components due to a flaw in JAXP. Detection requires checking installed Java versions against affected releases (8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27, etc.). Use commands like 'java -version' or 'where java' to identify installed versions. Compare against Oracle's advisory list.

Impact Analysis

If exploited, this vulnerability could lead to unauthorized access to sensitive data stored or processed by the affected Java versions. This includes data in applications running on vulnerable Java environments, especially those handling untrusted code from the internet.

Compliance Impact

This vulnerability allows unauthorized access to critical data or complete access to all accessible data in affected Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition products. This could lead to breaches of sensitive data, which may violate compliance requirements under GDPR (e.g., unauthorized data access) and HIPAA (e.g., exposure of protected health information).

Mitigation Strategies

Update affected Oracle Java SE, Oracle GraalVM for JDK, or Oracle GraalVM Enterprise Edition versions to the latest patched releases immediately. Disable unnecessary Java Web Start or Java applet applications that load untrusted code. Restrict network access to Java services where possible.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-87290. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...