CVE-2026-91568 Vulnerability in the RDBMS component of Oracle Database Server.

High 7.7 Published 20 Oct 2026 Updated 26 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-91568?

CVE-2026-91568 is a high-severity vulnerability in Oracle Database Server, published on 20 Oct 2026.

Official description

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, 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 RDBMS accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).

Weakness: CWE-284

Which versions are affected by CVE-2026-91568?

How do I fix CVE-2026-91568?

No fix has been published for CVE-2026-91568 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-91568 being exploited?

There is no known exploitation of CVE-2026-91568 in the wild and no public exploit code.

Sources

Also known as GHSA-9vw7-927p-3rjf.