CVE-2026-91661

HighCVSS 7.7/10Last modified Oct 23, 2026

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).

Metrics

CVSS 3.1 7.7/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected software

Vendor	Product	Versions
Oracle Corporation	Oracle Essbase	21.8.3.0.0

References

https://www.oracle.com/security-alerts/cpuoct2026.htmlVendor Advisory

Timeline

Published: Oct 20, 2026
Last modified: Oct 23, 2026
NVD status: Analyzed

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