Security Vulnerability in Oracle Essbase by Oracle
CVE-2026-91654

6.3MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Essbase
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91654?

A security vulnerability in Oracle Essbase version 21.8.3.0.0 allows low-privileged attackers with HTTP network access to compromise the system. This vulnerability can lead to unauthorized updates, inserts, or deletions of accessible data in Oracle Essbase. Additionally, it permits unauthorized reading of certain data and enables attackers to partially deny service availability on Oracle Essbase. Organizations using this affected version should review potential risks and apply necessary mitigations to secure their data.

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:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.