CVE-2026-91637

Summary

Oracle Essbase 21.8.3.0.0 contains a critical security vulnerability that allows low-privileged attackers with network access to fully compromise the system, affecting confidentiality, integrity, and availability. This vulnerability can lead to unauthorized access to sensitive business intelligence data and potential takeover of the entire Essbase platform.

Exploitability

The vulnerability is easily exploitable with low privileges over HTTP, requiring only network access to the affected Oracle Essbase instance running version 21.8.3.0.0.

Blast radius

Successful exploitation could compromise the entire Oracle Essbase system and potentially impact other connected products due to the scope change, affecting business intelligence and analytics platforms across the organization.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to Oracle Essbase 21.8.4.0.0 or later to remediate this vulnerability.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.