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).
Published: 2026-10-20
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized data access (confidentiality)
Action: Immediate Patch
AI Analysis

Impact

The flaw in Oracle Essbase allows a high‑privileged attacker with network access via HTTP to compromise the system. The vulnerability is easily exploitable and can be leveraged to gain unauthorized access to critical data or complete access to all Essbase data. The CVSS score of 6.8 indicates a moderate‑to‑considerable risk, primarily to confidentiality, with a change in scope allowing additional products to be affected if the attack is successful.

Affected Systems

Vendors: Oracle; Product: Oracle Essbase; Affected version: 21.8.3.0.0. No other affected versions are specified.

Risk and Exploitability

The CVSS base score of 6.8 reflects a moderate severity, while the EPSS score of < 1% and absence from the CISA KEV catalog suggest that the vulnerability is not widely exploited at present. The required conditions include network connectivity to the HTTP interface of Essbase and possession of high‑privilege credentials. Successful exploitation would result in confidentiality compromise with no direct impact on integrity or availability according to the provided information.

Generated by OpenCVE AI on October 27, 2026 at 11:31 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle Essbase security patch for version 21.8.3.0.0 as released by Oracle.
  • Configure firewall or network segmentation to restrict HTTP access to Essbase to trusted IP addresses only. If possible, bind the Essbase service to an internal network or use VPN protection.
  • Enable detailed logging for authentication and data‑query events, and perform regular reviews to detect anomalous access patterns.

Generated by OpenCVE AI on October 27, 2026 at 11:31 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 27 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
Title Oracle Essbase HTTP Privilege Escalation Leading to Unauthorized Data Access

Tue, 27 Oct 2026 10:15:00 +0000

Type Values Removed Values Added
Title Oracle Essbase High-Privilege HTTP Data Access Vulnerability
Weaknesses CWE-266
CWE-285

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

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

Type Values Removed Values Added
Title Oracle Essbase High-Privilege HTTP Data Access Vulnerability
Weaknesses CWE-266
CWE-285

Fri, 23 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Title High‑Privilege Remote HTTP Exploit Enabling Unauthorized Data Access in Oracle Essbase 21.8.3.0.0
Weaknesses CWE-200
CWE-284

Fri, 23 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo

Wed, 21 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Title High‑Privilege Remote HTTP Exploit Enabling Unauthorized Data Access in Oracle Essbase 21.8.3.0.0
Weaknesses CWE-200
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 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).
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': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-26T21:03:07.687Z

Reserved: 2026-09-14T22:10:16.649Z

Link: CVE-2026-91630

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:21:02.897

Modified: 2026-10-26T22:17:04.240

Link: CVE-2026-91630

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T11:45:13Z

Weaknesses