Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Utility). 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 logon to the infrastructure where Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition executes 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 as well as unauthorized read access to a subset 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 4.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).
Published: 2026-10-20
Score: 4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Data Manipulation / Unauthorized Access
Action: Assess Impact
AI Analysis

Impact

The vulnerability resides in the Utility component of Oracle Java SE and the related GraalVM products. An unauthenticated attacker with local logon to the infrastructure can invoke exposed APIs, such as those provided by a web service or a sandboxed Java client, to alter application data. The impact consists of unauthorized update, insert or delete operations and read access to some data, affecting confidentiality and integrity while leaving availability untouched. This issue corresponds to CWE-22 and CWE-284.

Affected Systems

Affected systems include Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition. The vendor list specifies affected releases: Oracle Java SE 8u503, 8u503‑perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27; GraalVM for JDK 17.0.20.1 and 21.0.12.1; GraalVM Enterprise Edition 21.3.19.1.1.

Risk and Exploitability

The CVSSv3.1 base score of 4.0 denotes low to moderate risk with local access and no privileges or user interaction required. The EPSS score of less than 1% indicates a very low probability of exploitation. The vulnerability is not listed in CISA’s KEV catalog. Because the attack vector requires logon to the host, organizations should limit local access to trusted administrators and apply vendor updates when available.

Generated by OpenCVE AI on October 22, 2026 at 16:04 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade to the latest Oracle Java SE, GraalVM for JDK, or GraalVM Enterprise Edition releases that contain the fix for the Utility component vulnerability.
  • If an update is not yet available, restrict local logon access to the infrastructure to trusted administrators and disable or tightly secure any exposed APIs that could be used to modify data.
  • Disable or remove untrusted sandboxed Java Web Start applications or applets that rely on the Java sandbox, especially if they load code from the internet, to reduce the attack surface.

Generated by OpenCVE AI on October 22, 2026 at 16:04 UTC.

Tracking

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

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

Type Values Removed Values Added
Title Unauthorized Data Modification Vulnerability in Oracle Java SE and GraalVM Bypassing API Security openjdk: Enhance Preferences (Oracle CPU 2026-10)
Weaknesses CWE-22
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 21 Oct 2026 19:30:00 +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

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Wed, 21 Oct 2026 09:45:00 +0000

Type Values Removed Values Added
Title Unauthorized Data Modification Vulnerability in Oracle Java SE and GraalVM Bypassing API Security
Weaknesses CWE-284

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: Utility). 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 logon to the infrastructure where Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition executes 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 as well as unauthorized read access to a subset 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 4.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/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': 4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/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: 2026-10-21T15:34:56.943Z

Reserved: 2026-09-14T22:10:16.631Z

Link: CVE-2026-91380

cve-icon Vulnrichment

Updated: 2026-10-21T15:34:51.112Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:20:41.130

Modified: 2026-10-21T18:45:11.277

Link: CVE-2026-91380

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:25:38Z

Links: CVE-2026-91380 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T16:15:08Z

Weaknesses
  • CWE-22

    Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

  • CWE-284

    Improper Access Control