Quick answers
- Is CVE-2026-91648 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91648 being exploited in the wild.
- How severe is CVE-2026-91648?
- Medium severity, with a CVSS score of 5.3, published 20 October 2026.
- Which products and versions are affected?
- Oracle Essbase 21.8.3.0.0.
- Is there a fix for CVE-2026-91648?
- 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-2026-91648 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-91648?
- 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
An easily exploitable unauthenticated vulnerability exists in the Java Based Agent component of Oracle Essbase, allowing network attackers to read a subset of accessible data without authentication. The vulnerability is triggered via TCP network access and requires no user interaction. A successful exploit results in confidentiality impact only, with no integrity or availability impact.
Affected products
- Oracle Essbase 21.8.3.0.0
Timeline
- 2026-10-20: disclosed