CVE-2026-91641

Modified Modified - Updated After Analysis

Information Disclosure in Oracle Essbase

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description

Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP 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 read access to a subset of Oracle Essbase accessible data. CVSS 3.1 Base Score 5.0 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-27

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91641

EUVD

EUVD-2026-106828

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	essbase	21.8.3.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Essbase version 21.8.3.0.0 under the Security component. It allows a low-privileged attacker with network access via HTTP to read a subset of data stored in Oracle Essbase. The impact is limited to unauthorized data access without affecting integrity or availability.

Detection Guidance

Detection requires checking for Oracle Essbase versions and monitoring HTTP traffic for unusual access patterns. Verify installed versions with commands like 'opatch lsinventory' or checking Oracle Essbase logs for unauthorized read attempts. Monitor network traffic for HTTP requests targeting Oracle Essbase ports.

Impact Analysis

If you use Oracle Essbase 21.8.3.0.0, an attacker could exploit this flaw to access sensitive data stored in the system. This could lead to data breaches, loss of confidential information, or unauthorized exposure of business or user data.

Compliance Impact

This vulnerability could lead to unauthorized data access, which may violate compliance requirements under GDPR (data protection) or HIPAA (health information privacy). Organizations using Oracle Essbase must address this to avoid regulatory penalties and ensure data security.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle Essbase version 21.8.3.0.0. Restrict network access to the HTTP interface to trusted sources only. Review and limit user privileges to the minimum required for operation.

Hi! I’m here to help you understand CVE-2026-91641. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...