CVE-2026-91631

Modified Modified - Updated After Analysis

Information Disclosure in Oracle Essbase

Publication date: 2026-10-20

Last updated on: 2026-10-26

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

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Meta Information

Published

2026-10-20

Last Modified

2026-10-26

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91631

EUVD

EUVD-2026-106818

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

Detection Guidance

Detection of this vulnerability requires monitoring Oracle Essbase for unauthorized access attempts or unusual data access patterns. Check Oracle Essbase logs for HTTP requests from low-privileged users attempting to access restricted data. Ensure network traffic to Oracle Essbase ports is logged and reviewed for anomalies.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive data stored in Oracle Essbase. This may lead to data breaches, loss of confidential information, or unauthorized disclosure of business or personal data.

Compliance Impact

This vulnerability could lead to non-compliance with data protection regulations such as GDPR or HIPAA by enabling unauthorized access to personal or sensitive health data. Organizations may face legal penalties, reputational damage, and loss of customer trust.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle Essbase version 21.8.3.0.0. Restrict network access to HTTP ports used by Oracle Essbase and limit privileges for users to reduce attack surface.

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EPSS Chart

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