CVE-2026-91503: High severity Oracle Database Server vulnerability
Vulnerability in the VPD component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having Create Table privilege with network access via Oracle Net to compromise VPD. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all VPD accessible data as well as unauthorized access to critical data or complete access to all VPD accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).
Affected Software
Event History
Frequently Asked Questions
Which deployments are affected?
Affected supported Oracle Database Server versions are 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3. The issue is in the VPD component.
What access does an attacker need to exploit this issue?
An attacker needs network access through Oracle Net and a low-privileged account with the Create Table privilege. No user interaction is required.
What could a successful attacker do?
A successful attacker could obtain unauthorized access to critical data or all VPD-accessible data, and could create, delete, or modify critical data or all VPD-accessible data. Availability impact is not indicated in the supplied CVSS vector.