Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). 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 update, insert or delete access to some of 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 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).
Published: 2026-10-20
Score: 3.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized data modification
Action: Patch
AI Analysis

Impact

The flaw resides in the Networking component of Oracle Java SE, Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition; it permits an unauthenticated threat actor with network access to invoke vulnerable APIs and perform unauthorized updates, inserts or deletes. The compromise is limited to data integrity, as confidentiality and availability are not affected. The attack exploits weaknesses listed as CWE‑287 and CWE‑93, indicating an authentication failure or improper handling of URLs.

Affected Systems

Affected are Oracle Java SE versions 8u503, 8u503‑perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27; Oracle GraalVM for JDK 17.0.20.1 and 21.0.12.1; and Oracle GraalVM Enterprise Edition 21.3.19.1.1. These releases include both client‑side Java Web Start applications, sandboxed applets and server‑side Java deployments that expose the vulnerable networking APIs.

Risk and Exploitability

The CVSS base score of 3.7 classifies the vulnerability as low severity, and the EPSS score indicates a very low exploitation probability (<1%). The vulnerability is not listed in CISA’s KEV catalog. Exploitation requires only network connectivity, no authentication or elevated privileges, and can be triggered through any exposed network service that uses the affected APIs, making it a realistic threat for systems that expose these interfaces to untrusted networks. While the impact is limited to integrity, applying the vendor’s patch remains the sole definitive mitigation.

Generated by OpenCVE AI on October 28, 2026 at 00:23 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade all affected Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition installations to the latest patch versions released in Oracle’s Oct 2026 security update.
  • If a patch is not immediately available, restrict network exposure of the affected Java applications and remove or sandbox the vulnerable Networking APIs from the application code.
  • Enable logging and monitor write operations against data sources used by Java applications to detect unauthorized modifications.

Generated by OpenCVE AI on October 28, 2026 at 00:23 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4861-1 openjdk-17 security update
History

Tue, 27 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 27 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287

Thu, 22 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Network-Based Data Modification via Java Networking APIs openjdk: Enhance Network Clients (Oracle CPU 2026-10)
Weaknesses CWE-93
References
Metrics threat_severity

None

 threat_severity

Low

Thu, 22 Oct 2026 03:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Network-Based Data Modification via Java Networking APIs
Weaknesses CWE-284

Wed, 21 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Oracle graalvm Enterprise Edition
Oracle oracle Java Se
Vendors & Products Oracle graalvm Enterprise Edition
Oracle oracle Java Se

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). 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 update, insert or delete access to some of 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 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).
First Time appeared Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
CPEs cpe:2.3:a:oracle:graalvm:21.3.19.1.1:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:11.0.32.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:25.0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:27:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:enterprise_performance:*:*:*
Vendors & Products Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Subscriptions

Oracle Graalvm Graalvm Enterprise Edition Graalvm For Jdk Java Se Oracle Java Se
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-27T18:54:01.116Z

Reserved: 2026-09-08T21:49:12.409Z

Link: CVE-2026-87292

cve-icon Vulnrichment

Updated: 2026-10-27T18:53:48.619Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:20:06.160

Modified: 2026-10-27T19:17:31.190

Link: CVE-2026-87292

cve-icon Redhat

Severity : Low

Publid Date: 2026-10-20T21:23:52Z

Links: CVE-2026-87292 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-28T00:30:14Z

Weaknesses
  • CWE-287

    Improper Authentication

  • CWE-93

    Improper Neutralization of CRLF Sequences ('CRLF Injection')