CVE-2026-91630

Modified Modified - Updated After Analysis

Oracle Essbase Security Bypass Vulnerability

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 high 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 access to critical data or complete access to all Oracle Essbase accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

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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-2026-91630

EUVD

EUVD-2026-106817

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 high privileged attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized access to critical data or full access to all Oracle Essbase accessible data.

Detection Guidance

Detection requires checking for Oracle Essbase versions and verifying network exposure. Inspect Oracle Essbase logs for unusual access patterns or unauthorized data requests. Ensure HTTP access is restricted to trusted networks and monitor for high-privileged user activity.

Impact Analysis

The vulnerability can result in unauthorized access to sensitive data stored in Oracle Essbase. Attackers may gain access to critical information or compromise the entire system, depending on their privileges and the data accessible through Essbase.

Compliance Impact

This vulnerability allows unauthorized access to critical or all accessible data in Oracle Essbase, which could lead to exposure of sensitive personal or health information. Such breaches may violate GDPR (General Data Protection Regulation) due to unauthorized data access and potential failure to ensure data confidentiality. It may also impact HIPAA (Health Insurance Portability and Accountability Act) compliance if protected health information is compromised.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle Essbase version 21.8.3.0.0. Restrict network access to Oracle Essbase via HTTP to trusted sources only. Review and enforce strict access controls for high-privileged users.

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