CVE-2026-91653

CVE-2026-91653

High · published October 21, 2026

CVSS v3.1
8.5
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

Vulnerability in Oracle Essbase (component: Essbase Web Platform). 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 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 8.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00195 · 8.7th percentile
Published
2026-10-21T02:21Z
Affected products (1)
ProductVersionsFixed in
oracle/essbaseall versions—
References (1)
https://www.oracle.com/security-alerts/cpuoct2026.html · [email protected]
EPSS history
Timeline
  • 22 OCT 03:36Z
    EPSS moved — → 0%
    epss
  • 20 OCT 21:26Z
    Vulnerability in Oracle Essbase (component: Essbase Web Platform)
    cvelistv5
  • 20 OCT 21:26Z
    Vulnerability in Oracle Essbase (component: Essbase Web Platform)
    cvelistv5