---
id: CVE-2026-91411
title: >-
  Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM
  Enterprise Edition product of Oracle Java SE (component: JGSS)
summary: >-
  Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM
  Enterprise Edition product of Oracle Java SE (component: JGSS).  Supported
  versions that are affected are Oracle Java SE: 8u503, 8u503-perf,
  11.0.32.1;    Oracle…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'
cvssSource: cna
cwe:
  - CWE-1286
vendor: Oracle Corporation
product: Oracle Java SE
affected:
  - oracle_java_se 8u503
  - oracle_java_se 8u503-perf
  - oracle_java_se 11.0.32.1
  - oracle_graalvm_for_jdk 17.0.20.1
  - oracle_graalvm_for_jdk 21.0.12.1
  - oracle_graalvm_enterprise_edition 21.3.19.1.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-23T19:57:14.375014Z'
published: '2026-10-20'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T19:58:11.357Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91411'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91411.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-91411'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2556922'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-91411'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91411'
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00267
epssPercentile: 0.18687
ingestedAt: '2026-10-20T22:23:33.763Z'
---

## Overview

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JGSS).  Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1;    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 ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition as well as  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 6.5 (Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).

## Affected

- `oracle_java_se 8u503`
- `oracle_java_se 8u503-perf`
- `oracle_java_se 11.0.32.1`
- `oracle_graalvm_for_jdk 17.0.20.1`
- `oracle_graalvm_for_jdk 21.0.12.1`
- `oracle_graalvm_enterprise_edition 21.3.19.1.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat build of OpenJDK 1.8, Red Hat build of OpenJDK 11 ELS, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat build of OpenJDK 1.8, Red Hat build of OpenJDK 11 ELS, … · updated 2026-10-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91411.json)