Description
Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Essbase accessible data as well as unauthorized read access to a subset of Oracle Essbase accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Essbase. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
Published: 2026-10-20
Score: 7.3 High
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized data modification, unauthorized read, and partial denial of service
Action: Patch Immediately
AI Analysis

Impact

Vulnerability in Oracle Essbase 21.8.3.0.0 allows an unauthenticated attacker with HTTP network access to arbitrarily update, insert, or delete accessible data, read a protected subset of information, or trigger a partial denial of service. This flaw resides in the security component of the application. The classification under access control and authentication weaknesses is inferred rather than explicitly stated. An attacker exploiting this weakness can compromise data confidentiality, integrity, and partially degrade availability, as indicated by the CVSS 3.1 score of 7.3.

Affected Systems

Oracle Corp’s Essbase product, specifically version 21.8.3.0.0, is vulnerable.

Risk and Exploitability

The flaw allows unauthenticated remote exploitation over HTTP. Despite the low EPSS value, the impact on confidentiality, integrity, and availability is substantial, and the CVSS score of 7.3 underscores the severity. The vulnerability is not recorded in CISA KEV, but an attacker could still inflict data loss, unauthorized data manipulation, or temporary service disruption if the exposed HTTP interfaces are reachable.

Generated by OpenCVE AI on October 23, 2026 at 21:49 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle Essbase patch that addresses this vulnerability or upgrade to a non‑affected version.
  • Restrict incoming HTTP traffic to the Essbase servers by configuring firewalls, VPNs, or network segmentation to allow only trusted hosts.
  • Enable detailed logging and audit trails for all data modification operations and review logs regularly for evidence of unauthorized reads or writes.
  • Periodically scan Essbase endpoints for exposed interfaces and verify that network-level controls remain in place.

Generated by OpenCVE AI on October 23, 2026 at 21:49 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 27 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 23 Oct 2026 22:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote Data Modification and Partial DoS in Oracle Essbase
Weaknesses CWE-284
CWE-287

Fri, 23 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote Data Modification and Partial DoS in Oracle Essbase via HTTP
Weaknesses CWE-284
CWE-287

Fri, 23 Oct 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo

Wed, 21 Oct 2026 11:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Remote Data Modification and Partial DoS in Oracle Essbase via HTTP
Weaknesses CWE-284
CWE-287

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Essbase accessible data as well as unauthorized read access to a subset of Oracle Essbase accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Essbase. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
First Time appeared Oracle
Oracle essbase
CPEs cpe:2.3:a:oracle:essbase:21.8.3.0.0:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle essbase
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-27T13:02:24.285Z

Reserved: 2026-09-14T22:10:16.650Z

Link: CVE-2026-91642

cve-icon Vulnrichment

Updated: 2026-10-27T13:02:14.871Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:21:04.310

Modified: 2026-10-27T13:17:01.650

Link: CVE-2026-91642

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T22:00:28Z

Weaknesses