CVE-2026-91651

Analyzed Analyzed - Analysis Complete

Oracle Essbase Web Platform Remote Code Execution

Publication date: 2026-10-20

Last updated on: 2026-10-23

Assigner: Oracle

Description

Vulnerability in Oracle Essbase (component: Essbase Web Platform). The supported version that is affected is 21.8.3.0.0. Difficult to exploit 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 takeover of Oracle Essbase. CVSS 3.1 Base Score 8.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-23

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91651

EUVD

EUVD-2026-106838

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	essbase	21.8.3.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Essbase version 21.8.3.0.0 within the Essbase Web Platform component. It allows a low-privileged attacker with network access via HTTP to potentially take over the entire Oracle Essbase system. The attack is difficult to exploit but can have severe consequences.

Detection Guidance

Detection requires checking for Oracle Essbase version 21.8.3.0.0 or affected configurations. Monitor network traffic for unusual HTTP requests targeting Essbase Web Platform. Review logs for unauthorized access attempts or privilege escalation patterns. Use Oracle's official security patches and advisories for specific detection methods.

Impact Analysis

If exploited, this vulnerability could lead to a complete takeover of Oracle Essbase. This means an attacker could gain full control over the system, potentially accessing, modifying, or deleting sensitive data stored within Essbase. The impact includes confidentiality, integrity, and availability breaches.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. A successful exploit could result in data breaches, leading to legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Apply the latest security patches from Oracle for Essbase version 21.8.3.0.0. Restrict network access to the Essbase Web Platform via HTTP. Monitor for unusual activity or unauthorized access attempts.

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