CVE-2026-91650

Modified Modified - Updated After Analysis

Unauthenticated Data Read in Oracle Essbase

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description

Vulnerability in Oracle Essbase (component: Java Based Agent). The supported version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Essbase accessible data. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-27

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91650

EUVD

EUVD-2026-106837

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	essbase	21.8.3.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Essbase version 21.8.3.0.0 affecting the Java Based Agent component. It allows an unauthenticated attacker with network access via HTTP to potentially read a subset of data stored in Oracle Essbase. The attack requires no user interaction and has a low impact on confidentiality according to CVSS scoring.

Detection Guidance

Detection of CVE-2026-91650 requires monitoring network traffic for unauthorized access attempts to Oracle Essbase via HTTP. Check server logs for suspicious HTTP requests targeting the Java Based Agent component. Ensure Oracle Essbase is updated to version 21.8.3.0.0 or later to mitigate this issue.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain unauthorized read access to some of your Oracle Essbase data. This means sensitive information stored in the system might be exposed, though the attacker cannot modify or delete data or execute code.

Compliance Impact

This vulnerability could lead to unauthorized data access, which may violate compliance requirements under GDPR, HIPAA, or other regulations that mandate strict data protection. Organizations using affected Oracle Essbase versions should assess potential compliance risks and apply patches promptly.

Mitigation Strategies

Apply the latest Oracle Essbase patch for version 21.8.3.0.0 to address the vulnerability. Restrict network access to the Java Based Agent component via HTTP to trusted sources only. Monitor for unauthorized access attempts or unusual data access patterns in Oracle Essbase logs.

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