Quick answers
- Is CVE-2026-91563 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91563 being exploited in the wild.
- How severe is CVE-2026-91563?
- High severity, with a CVSS score of 8.8, published 20 October 2026.
- Which products and versions are affected?
- Oracle Database Server 19.3-19.32, 21.3-21.23, 23.4.0-23.26.3.
- Is there a fix for CVE-2026-91563?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-91563 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-91563?
- Check whether you run Oracle Database Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A privilege escalation vulnerability in the Oracle OLAP component of Oracle Database Server allows an authenticated attacker with DBMS_AW privilege to achieve complete compromise via Oracle Net. The vulnerability is easily exploitable with low attack complexity and no user interaction required, resulting in complete confidentiality, integrity, and availability compromise of the OLAP component.
Affected products
- Oracle Database Server 19.3-19.32, 21.3-21.23, 23.4.0-23.26.3
Timeline
- 2026-10-20: disclosed