CVE-2026-91636

Oracle Essbase 21.8.3.0.0 HTTP Authentication Bypass Exploitable for Full Data Disclosure

Published Oct 20, 2026 CVSS 3.1 · 7.7 High 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. 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 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).

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
Title Oracle Essbase 21.8.3.0.0 HTTP Authentication Bypass Exploitable for Full Data Disclosure
Type Values Removed Values Added
Title Low Privilege Remote Data Exposure via HTTP in Oracle Essbase
Weaknesses CWE-285
Type Values Removed Values Added
Weaknesses CWE-200
Metrics ssvc

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

Type Values Removed Values Added
Title Low Privilege Remote Data Exposure via HTTP in Oracle Essbase
Weaknesses CWE-285
Type Values Removed Values Added
Title Oracle Essbase Vulnerability Allows Unauthorized Data Access via HTTP
Weaknesses CWE-200
CWE-284
Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
Type Values Removed Values Added
Title Oracle Essbase Vulnerability Allows Unauthorized Data Access via HTTP
Weaknesses CWE-200
CWE-284
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. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
oracle
Published
Updated
Oct 27, 2026, 12:58 PM
Reserved
Sep 14, 2026, 10:10 PM
Status
Modified
Published
Oct 20, 2026, 10:21 PM
Modified
Oct 27, 2026, 1:17 PM