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 access to critical data or complete access to all Oracle Essbase accessible data as well as unauthorized update, insert or delete access to some of Oracle Essbase accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Essbase. CVSS 3.1 Base Score 9.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L).
Published: 2026-10-20
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
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Remediation

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Tracking

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Advisories

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History

Tue, 27 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 23 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Title Exploitable Privilege Validation Vulnerability in Oracle Essbase 21.8.3.0.0 Allows Unauthorized Data Access and Denial of Service
Weaknesses CWE-284

Fri, 23 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Title Low‑Privilege HTTP Remote Exploit in Oracle Essbase Security Component
Weaknesses CWE-284

Fri, 23 Oct 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo

Wed, 21 Oct 2026 11:15:00 +0000

Type Values Removed Values Added
Title Low‑Privilege HTTP Remote Exploit in Oracle Essbase Security Component
Weaknesses CWE-284

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
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 access to critical data or complete access to all Oracle Essbase accessible data as well as unauthorized update, insert or delete access to some of Oracle Essbase accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Essbase. CVSS 3.1 Base Score 9.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L).
First Time appeared Oracle
Oracle essbase
CPEs cpe:2.3:a:oracle:essbase:21.8.3.0.0:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle essbase
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-27T13:16:59.398Z

Reserved: 2026-09-14T22:10:16.650Z

Link: CVE-2026-91655

cve-icon Vulnrichment

Updated: 2026-10-27T13:16:54.166Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:21:05.803

Modified: 2026-10-27T14:17:05.590

Link: CVE-2026-91655

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T21:15:16Z

Weaknesses