---
id: CVE-2026-91662
title: 'Vulnerability in Oracle Essbase (component: Java Based Agent)'
summary: >-
  Vulnerability in Oracle Essbase (component: Java Based Agent).   The supported
  version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability
  allows low privileged attacker with logon to the infrastructure where Oracle
  Essbas…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle Essbase
affected:
  - oracle_essbase 21.8.3.0.0
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:26:55.186Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91662'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.701Z'
---

## Overview

Vulnerability in Oracle Essbase (component: Java Based Agent).   The supported version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Essbase executes to compromise Oracle Essbase.  While the vulnerability is in Oracle Essbase, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Essbase accessible data as well as  unauthorized update, insert or delete access to some of Oracle Essbase accessible data. CVSS 3.1 Base Score 6.4 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N).

## Affected

- `oracle_essbase 21.8.3.0.0`

## Remediation

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