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OracleCVE-2026-91644

Oracle Essbase: unauthenticated attacker could compromise Oracle Essbase

Oracle

CVE-2026-91644 · Published Oct 20, 2026 · updated Oct 27, 2026

Critical9.3
No fix yet
Oracle advisory

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 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 as well as unauthorized update, insert or delete access to some of Oracle Essbase accessible data. CVSS 3.1 Base Score 9.3 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N).

Affected versions

PackageAffectedFixed in
Oracle Essbase
Product
<= 21.8.3.0.0No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-284

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