CVE-2026-91645

Modified Modified - Updated After Analysis

Oracle Essbase Unauthorized Data Read Vulnerability

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 unauthenticated attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Essbase accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-27

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-09

NVD

CVE-2026-91645

EUVD

EUVD-2026-106832

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 affecting the Security component. It allows an unauthenticated attacker with network access via HTTP to potentially read a subset of accessible data in Oracle Essbase. The vulnerability has a CVSS 3.1 base score of 5.3, indicating low confidentiality impact.

Impact Analysis

An attacker could exploit this to gain unauthorized read access to some data stored in Oracle Essbase. This may lead to exposure of sensitive information depending on what data is accessible through the affected component.

Compliance Impact

This vulnerability allows unauthorized read access to a subset of Oracle Essbase data, which could lead to unauthorized disclosure of sensitive information. This may impact compliance with regulations like GDPR or HIPAA if the accessed data includes personal or health information.

Mitigation Strategies

Update Oracle Essbase to a version that is not affected by this vulnerability. Ensure network access to Oracle Essbase is restricted to trusted sources only. Monitor network traffic for unauthorized access attempts to the Oracle Essbase HTTP interface.

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