Quick answers
- Is CVE-2026-91499 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91499 being exploited in the wild.
- How severe is CVE-2026-91499?
- High severity, with a CVSS score of 8.8, published 20 October 2026.
- Which products and versions are affected?
- Oracle Database Server 23.4.0 through 23.26.3.
- Is there a fix for CVE-2026-91499?
- 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-2026-91499 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-91499?
- 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
The vulnerability in the RDBMS component of Oracle Database Server is easily exploitable by a low-privileged attacker with DBMS_VECTOR privilege who can reach the database via Oracle Net (network access). Successful exploitation results in complete compromise of the RDBMS, affecting confidentiality, integrity, and availability. A fix is not yet publicly confirmed.
Affected products
- Oracle Database Server 23.4.0 through 23.26.3
Timeline
- 2026-10-20: disclosed