Quick answers
- Is CVE-2026-91662 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91662 being exploited in the wild.
- How severe is CVE-2026-91662?
- Medium severity, with a CVSS score of 6.4, published 20 October 2026.
- Which products and versions are affected?
- Oracle Essbase 21.8.3.0.0.
- Is there a fix for CVE-2026-91662?
- 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-2026-91662 attacked?
- It is attacked with local access, in a hosted service.
- Am I affected by CVE-2026-91662?
- Check whether you run Oracle Essbase 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 exists in the Java Based Agent component of Oracle Essbase affecting version 21.8.3.0.0. The vulnerability requires local access and valid credentials; a low-privileged attacker on the infrastructure hosting Essbase can exploit it to gain higher privileges and read or modify critical data. The scope is marked as changed, indicating impact beyond the vulnerable component itself.
Affected products
- Oracle Essbase 21.8.3.0.0
Timeline
- 2026-10-20: disclosed