CVE-2026-91642 Oracle Essbase - Broken Access Control

Oracle Essbase 21.8.3.0.0 contains a broken access control vulnerability in Security component, letting unauthenticated attackers with network access via HTTP perform unauthorized data read, modification, and partial denial of service.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure, Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published
20 October 2026
Updated
21 October 2026

Vendor fix

Update to the latest available version beyond 21.8.3.0.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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