{"id":"CVE-2026-91658","published":"2026-10-20T22:21:06.150","lastModified":"2026-10-23T17:19:01.540","description":"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).","cvssScore":9.9,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cwes":["CWE-284"],"vendors":["oracle"],"products":["essbase"],"references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"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 flaw represents a significant risk as it can lead to complete system takeover.","exploitability":"The vulnerability is easily exploitable requiring only low privileged network access via HTTP, with minimal preconditions for successful exploitation.","blast_radius":"Successful exploitation could result in full compromise of Oracle Essbase and potentially impact additional related products due to the scope change, making this a high-impact attack vector.","remediation":"Upgrade to Oracle Essbase 21.8.3.0.1 or later to remediate this vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["security","database","enterprise"],"model":"garnet-coder","analyzedAt":"2026-10-21T01:21:09.166Z"}}