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 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: Availability Denial of Service
Action: Patch Immediately
AI Analysis

Impact

This vulnerability resides in the InnoDB storage engine of Oracle MySQL Server and MySQL Cluster. It allows an attacker who has high‑privilege network access to trigger a hang or a repeatable crash that completely disrupts database availability. The flaw corresponds to the unreliability of resource consumption (CWE-400) and the ability of an authorized user to perform privileged actions without control (CWE-284). The CVSS v3.1 base score of 4.9 reflects that the impact is confined to availability, with no confidentiality or integrity implications.

Affected Systems

Affected are 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. All instances running these releases are vulnerable until a patch is applied or the software is upgraded beyond the listed ranges.

Risk and Exploitability

The CVSS score of 4.9 denotes a moderate severity for availability. The EPSS score is less than 1%, indicating an extremely low likelihood of current exploitation, and the vulnerability is not listed in the CISA KEV catalog. The attack vector requires remote network connectivity to the MySQL services and high‑privilege credentials to exploit the bug, making it exploitable only by users with elevated access on the network.

Generated by OpenCVE AI on October 23, 2026 at 04:48 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle patch that fixes the InnoDB crash issue for all affected MySQL Server and MySQL Cluster releases.
  • Upgrade to a newer minor release that is not listed in the affected ranges (for example, MySQL Server 8.4.13+ or 9.7.4+ and MySQL Cluster 8.0.50+).
  • Restrict network access to the MySQL ports and enforce least privilege; monitor the database for repeated hangs or crash events.

Generated by OpenCVE AI on October 23, 2026 at 04:48 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 InnoDB Crash Vulnerability in Oracle MySQL Server and Cluster mysql: mysql: Denial of Service in InnoDB
Weaknesses CWE-400
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 13:15:00 +0000

Type Values Removed Values Added
Title InnoDB Crash Vulnerability in Oracle MySQL Server and Cluster

Thu, 22 Oct 2026 11:30:00 +0000

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

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'}

Wed, 21 Oct 2026 01:00:00 +0000

Type Values Removed Values Added
Title InnoDB Vulnerability Causing Denial of Service in MySQL Server and Cluster
Weaknesses 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 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: 2026-10-21T18:37:18.391Z

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

Link: CVE-2026-101622

cve-icon Vulnrichment

Updated: 2026-10-21T18:19:26.645Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:16.160

Modified: 2026-10-21T19:16:50.677

Link: CVE-2026-101622

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:56Z

Links: CVE-2026-101622 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T05:00:15Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption