Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: DDL). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Patch
AI Analysis

Impact

An exploitable flaw in the DDL component of Oracle MySQL Server and MySQL Cluster allows an attacker with high privileged access and network connectivity to repeatedly trigger a hang or crash of the database system. The CVSS vector explicitly indicates that confidentiality (C) and integrity (I) are not impacted, so the effect is limited to availability by causing the database services to stop until restarted. Successful exploitation can lead to prolonged downtime or the need for manual intervention to restore service.

Affected Systems

Oracle MySQL Server versions 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1, as well as MySQL Cluster versions 8.0.0 through 8.0.49, 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1.

Risk and Exploitability

The CVSS 3.1 base score of 4.9 indicates a moderate severity driven by availability impact. The EPSS score of <1% suggests a very low probability of exploitation at the time of analysis. The attack vector is network‑based with high privileged access required to issue DDL commands. No data indicates widespread exploitation, and the vulnerability is not in CISA's KEV catalog, but an attacker who succeeds can repeatedly crash the database, potentially leading to extended downtime.

Generated by OpenCVE AI on October 23, 2026 at 07:17 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle CPU Oct 2026 advisory patches for MySQL Server and MySQL Cluster to update affected versions (8.4.x, 9.7.x, 26.7.x).
  • Restart the MySQL instances or the MySQL services to complete the patch process and clear any residual failures.
  • Enforce least‑privilege DDL permissions by reviewing and restricting database roles to prevent unnecessary high‑privilege access.

Generated by OpenCVE AI on October 23, 2026 at 07:17 UTC.

Tracking

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Advisories

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History

Thu, 05 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Fri, 23 Oct 2026 06:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-911

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Title Denial of Service in MySQL Server and Cluster via DDL Component mysql: mysql: Denial of service via DDL component
Weaknesses CWE-400
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 21 Oct 2026 06:30:00 +0000

Type Values Removed Values Added
Title Denial of Service in MySQL Server and Cluster via DDL Component
Weaknesses CWE-911

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

Type Values Removed Values Added
Description Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: DDL). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
First Time appeared Oracle
Oracle mysql Cluster
Oracle mysql Server
CPEs cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle mysql Cluster
Oracle mysql Server
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

Oracle Mysql Cluster Mysql Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-11-05T15:57:10.758Z

Reserved: 2026-09-28T15:40:09.495Z

Link: CVE-2026-101613

cve-icon Vulnrichment

Updated: 2026-11-05T15:56:57.957Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:15.120

Modified: 2026-11-05T16:17:22.833

Link: CVE-2026-101613

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:53Z

Links: CVE-2026-101613 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T07:30:09Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption