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CVE-2026-91563 is a vulnerability in the Oracle OLAP component of Oracle Database Server affecting supported versions 19.3–19.32, 21.3–21.23, and 23.4.0–23.26.3. A low-privileged attacker with DBMS_AW privilege and network access through Oracle Net can exploit the vulnerability to take over Oracle OLAP. Exploitation has low complexity and requires no user interaction. The vulnerability has a CVSS v3.1 base score of 8.8 with vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The underlying root cause and vulnerable function are not specified.
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A vulnerability in Oracle Database Server's Oracle OLAP component permits takeover by a low-privileged attacker with DBMS_AW privilege and network access via Oracle Net. Exploitation requires low attack complexity and no user interaction, with high confidentiality, integrity, and availability impacts. The CVSS 3.1 base score is 8.8.
An easily exploitable vulnerability in Oracle Database Server's Oracle OLAP component allows a low-privileged attacker with DBMS_AW privilege and network access through Oracle Net to take over Oracle OLAP without user interaction. Affected versions are 19.3–19.32, 21.3–21.23, and 23.4.0–23.26.3. The reported CVSS v3.1 score is 8.8, with high confidentiality, integrity, and availability impacts. The history records receipt of the CVE on October 20, 2026, and references Oracle's October 2026 Critical Patch Update, but does not explicitly confirm patch availability.
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