Quick answers
- Is CVE-2026-91649 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91649 being exploited in the wild.
- How severe is CVE-2026-91649?
- Medium severity, with a CVSS score of 6, published 20 October 2026.
- Which products and versions are affected?
- Oracle Essbase 21.8.3.0.0.
- Is there a fix for CVE-2026-91649?
- 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-2026-91649 attacked?
- It is attacked with local access, in a web application.
- Am I affected by CVE-2026-91649?
- 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
The vulnerability is a privilege escalation flaw in Oracle Essbase's Java Based Agent component, exploitable by high-privileged attackers with local logon access to the infrastructure. The vulnerability has cross-scope impact (scope change in CVSS terms), allowing an attacker to compromise confidentiality of data beyond Essbase itself. No patch information is publicly available in the advisory.
Affected products
- Oracle Essbase 21.8.3.0.0
Timeline
- 2026-10-20: disclosed