CVE-2026-91654

Access Control Bypass in Oracle Essbase Enables Unauthorized Data Operations

Published Oct 20, 2026 CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
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. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Essbase accessible data as well as unauthorized read access to a subset 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 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Access Control Bypass in Oracle Essbase Enables Unauthorized Data Operations
Weaknesses CWE-200
CWE-284
Type Values Removed Values Added
Title Low‑Privilege HTTP Access Enables Data Modification and Partial Denial of Service in Oracle Essbase
Weaknesses CWE-200
CWE-284
CWE-399
Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
Type Values Removed Values Added
Title Low‑Privilege HTTP Access Enables Data Modification and Partial Denial of Service in Oracle Essbase
Weaknesses CWE-200
CWE-284
CWE-399
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. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Essbase accessible data as well as unauthorized read access to a subset 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 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}

Sources

Status
PUBLISHED
Assigner
oracle
Published
Updated
Oct 27, 2026, 1:15 PM
Reserved
Sep 14, 2026, 10:10 PM
Status
Modified
Published
Oct 20, 2026, 10:21 PM
Modified
Oct 27, 2026, 2:17 PM