Live › vulnerability › CVE-2026-91638
Go to dashboardOracle Essbase 21.8.3.0.0 (Security component) has a flaw reachable over HTTP by a low-privileged authenticated user. It can lead to takeover of Essbase and affect other components (scope change). CVSS 3.1 9.9. Oracle fixed it in the October 2026 Critical Patch Update. No public exploitation or PoC found.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| oracle essbase | vendor | = 21.8.3.0.0 | – |
| oracle essbase | vendor | 21.8.3.0.0 | – |
21.8.3.0.0 is the only affected version Oracle listss October 2026 CPU through the Database' Patch Availability Document on My Oracle Support (login required)Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privileged 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 takeover of Oracle Essbase. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
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