Description
Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Essbase. CVSS 3.1 Base Score 4.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).
Published: 2026-10-20
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Partial Denial of Service (Availability)
Action: Apply Patch
AI Analysis

Impact

The vulnerability resides in the Security component of Oracle Essbase version 21.8.3.0.0, allowing an unauthenticated or low‑privileged attacker with network access via HTTP to trigger a partial denial of service. Attackers can issue requests that consume resources, leading to intermittent unavailability without affecting confidentiality or integrity, as reflected by a CVSS score of 4.3 and an availability‑only impact.

Affected Systems

Oracle Essbase 21.8.3.0.0 is the sole product and version affected. No other variants are listed in the CVE data.

Risk and Exploitability

With a CVSS score of 4.3 the vulnerability presents a moderate threat to service availability. The EPSS score of less than 1% indicates a low probability of exploitation in the current environment, and the issue is not listed in the CISA KEV catalog. Attackers can leverage a network‑based HTTP connection to send crafted requests that consume server resources, causing intermittent outages unless mitigated through patching, IP filtering, or monitoring.

Generated by OpenCVE AI on October 23, 2026 at 21:46 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle Essbase security update or upgrade to a fixed version that addresses the partial DoS issue
  • Restrict HTTP access to Essbase servers to trusted IP addresses or subnets using firewall rules or network segmentation
  • Continuously monitor logs and network traffic for signs of DoS attempts and enforce rate limiting where possible

Generated by OpenCVE AI on October 23, 2026 at 21:46 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 27 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Title Partial Denial of Service via HTTP in Oracle Essbase Security Component
Weaknesses CWE-400

Fri, 23 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
Title Oracle Essbase Partial Denial of Service via HTTP
Weaknesses CWE-284
CWE-400

Fri, 23 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo

Wed, 21 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
Title Oracle Essbase Partial Denial of Service via HTTP
Weaknesses CWE-284
CWE-400

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 low privileged attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Essbase. CVSS 3.1 Base Score 4.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-27T21:27:29.999Z

Reserved: 2026-09-14T22:10:16.651Z

Link: CVE-2026-91660

cve-icon Vulnrichment

Updated: 2026-10-27T21:27:22.866Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:21:06.383

Modified: 2026-10-27T22:19:07.317

Link: CVE-2026-91660

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses