Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB). 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 low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Immediate Patch
AI Analysis

Impact

A flaw in the InnoDB storage engine of Oracle MySQL Server and MySQL Cluster can be triggered by a low privileged attacker who has network access to the database. The vulnerability allows such an attacker to cause the MySQL process to hang or crash repeatedly, resulting in a complete denial‑of‑service of the database service. The weakness involves improper input handling and resource allocation that lacks safeguards against malformed client requests, leading to loss of availability.

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; Oracle 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 are impacted.

Risk and Exploitability

The CVSS v3.1 base score of 6.5 indicates a moderate severity with an availability impact. The EPSS score is less than 1%, suggesting a very low probability of exploitation at present. The vulnerability is not listed in the CISA KEV catalog. The likely attack vector is over a network via supported MySQL protocols and requires only low client‑side privileges. Successful exploitation enables an attacker to repeatedly crash the database service, making it unavailable until a manual restart or fail‑over procedure is executed.

Generated by OpenCVE AI on October 23, 2026 at 05:59 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle MySQL patches or upgrade to a non‑affected version, which addresses the privilege‑management and resource‑consumption weaknesses (CWE‑284, CWE‑400).
  • Enforce strict role‑based access control to limit low‑privileged users from executing functions that could trigger the vulnerability, mitigating the CWE‑284 flaw.
  • Implement input validation and resource‑usage limits, such as setting InnoDB buffer pool and query timeout constraints, to guard against the CWE‑400 resource‑exhaustion issue.

Generated by OpenCVE AI on October 23, 2026 at 05:59 UTC.

Tracking

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Advisories

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History

Fri, 23 Oct 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-190

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

Type Values Removed Values Added
Title Denial of Service Vulnerability in MySQL Server and Cluster via InnoDB Exploit mysql: mysql: Denial of Service in InnoDB
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics ssvc

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

Wed, 21 Oct 2026 02:15:00 +0000

Type Values Removed Values Added
Title Denial of Service Vulnerability in MySQL Server and Cluster via InnoDB Exploit
Weaknesses CWE-190
CWE-400

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: 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 low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/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: 2026-10-22T17:32:53.977Z

Reserved: 2026-09-28T15:40:09.503Z

Link: CVE-2026-101747

cve-icon Vulnrichment

Updated: 2026-10-22T17:26:06.186Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:18:29.750

Modified: 2026-10-28T18:52:57.843

Link: CVE-2026-101747

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:40Z

Links: CVE-2026-101747 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T06:00:13Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption