Security Vulnerability in Oracle Essbase Component
CVE-2026-91636

7.7HIGH

Key Information:

Vendor

Oracle
Status
Oracle Essbase
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91636?

This vulnerability in Oracle Essbase, specifically affecting version 21.8.3.0.0, allows low-privilege attackers with network access via HTTP to potentially gain unauthorized access to critical data. Exploiting this security flaw could enable an attacker to manipulate data or gain complete access to all information accessible through Oracle Essbase. Furthermore, the implications of this vulnerability could extend to other related products, highlighting a significant risk for organizations utilizing Oracle solutions.

Affected Version(s)

Oracle Essbase 21.8.3.0.0

References

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

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.