CVE-2026-91634

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-20 · updated 2026-10-27
Weakness: CWE-200

Description

Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Essbase accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Affected products

Oracle Corporation Oracle Essbase: 21.8.3.0.0 (and their updates)
Oracle Corporation Oracle Essbase: 21.8.3.0.0

References

https://www.oracle.com/security-alerts/cpuoct2026.html

Get alerted when CVE-2026-91634 or the next vulnerability affects your stack