Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 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 as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).
Published: 2026-10-20
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Database Integrity and Availability Impact
Action: Immediate Patch
AI Analysis

Impact

The vulnerability resides in the InnoDB storage engine of Oracle MySQL Server and MySQL Cluster. The flaw is a weak access‑control issue that allows an attacker who already has high‑privilege authentication to perform unauthorized update, insert or delete operations on database tables and to cause a sustained denial‑of‑service by repeatedly crashing or hanging the server. The impact is loss of data integrity and availability for all databases hosted on the affected MySQL instances.

Affected Systems

Oracle MySQL Server versions 9.7.0‑9.7.3 and 26.7.0‑26.7.1 and Oracle MySQL Cluster versions 9.7.0‑9.7.3 and 26.7.0‑26.7.1 are affected in all installations running those releases.

Risk and Exploitability

The CVSS base score of 5.5 indicates moderate severity. Attack vector is network‑based and requires elevated privileges. The EPSS score is less than 1%, and the vulnerability is not listed in CISA’s KEV catalog, suggesting a presently low exploitation likelihood but potential for future impact. Exploitation would require the attacker to gain high‑privilege authentication on the MySQL service through network protocols and then abuse InnoDB’s insufficient access controls.

Generated by OpenCVE AI on October 23, 2026 at 03:00 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest patch from Oracle for MySQL Server and MySQL Cluster that addresses the InnoDB access‑control flaw.
  • Restrict network exposure of the MySQL services to trusted IPs and enforce the principle of least privilege on database accounts.
  • Configure audit logging for all data‑modification statements and review logs regularly to detect any illicit activity.

Generated by OpenCVE AI on October 23, 2026 at 03:00 UTC.

Tracking

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Advisories

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History

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

Type Values Removed Values Added
Title MySQL InnoDB Access Control Flaw Allows Unauthorized Data Changes and Denial of Service mysql: mysql: Denial of Service via InnoDB component
Weaknesses CWE-617
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 10:15:00 +0000

Type Values Removed Values Added
Title MySQL InnoDB Access Control Flaw Allows Unauthorized Data Changes and Denial of Service

Wed, 21 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics ssvc

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

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: InnoDB). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 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 as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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': 5.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H'}

Subscriptions

Oracle Mysql Cluster Mysql Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-21T18:35:19.920Z

Reserved: 2026-09-28T15:40:09.496Z

Link: CVE-2026-101637

cve-icon Vulnrichment

Updated: 2026-10-21T18:19:44.236Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:17.880

Modified: 2026-10-21T19:16:52.383

Link: CVE-2026-101637

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:02Z

Links: CVE-2026-101637 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T03:00:11Z

Weaknesses