---
id: CVE-2026-91649
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. Easily exploitable vulnerability
  allows high privileged attacker with logon to the infrastructure where Oracle
  Essbase…
severity: medium
cvss: 6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle Essbase
affected:
  - oracle_essbase 21.8.3.0.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-27T13:07:56.032750Z'
published: '2026-10-20'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T13:08:24.664Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91649'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
epss: 0.00183
epssPercentile: 0.0784
ingestedAt: '2026-10-20T22:23:33.705Z'
---

## Overview

Vulnerability in Oracle Essbase (component: Java Based Agent).   The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows high 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. CVSS 3.1 Base Score 6.0 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

## Affected

- `oracle_essbase 21.8.3.0.0`

## Remediation

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