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. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Apply patch
AI Analysis

Impact

A vulnerability in the InnoDB component of Oracle MySQL Server and MySQL Cluster allows a high privileged attacker with network access to trigger a hang or a complete crash of the database service. The flaw is difficult to exploit but, when successful, results in an availability impact with no remote code execution or data leakage. It is triggered by carefully crafted traffic sent through supported network protocols and requires the attacker to have high privilege on the host or to be able to influence the MySQL process with sufficient permissions.

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, and 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 affected. These vulnerable releases run on any platform supported by the MySQL distribution.

Risk and Exploitability

The CVSS 3.1 base score of 4.4 indicates a low‑to‑moderate severity focused on availability. As no EPSS score is provided and the vulnerability is not in the CISA KEV catalog, public exploitation is unlikely at present. However, the requirement for high privilege and network access means that internal adversaries or compromised hosts could launch attacks. The risk remains moderate, especially in environments where MySQL services are exposed to untrusted networks or where privileged access is weakly controlled.

Generated by OpenCVE AI on October 21, 2026 at 00:40 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade MySQL Server or MySQL Cluster to any release beyond 8.4.12, 9.7.3, and 26.7.1 that does not contain the affected InnoDB code
  • Restrict inbound traffic to the MySQL ports to trusted IP addresses or subnets and enforce firewall rules to limit exposure of database protocols
  • Configure the MySQL service to use connection limits and enable logging of failed connection attempts to detect and respond to abnormal hang or crash patterns

Generated by OpenCVE AI on October 21, 2026 at 00:40 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 00:45:00 +0000

Type Values Removed Values Added
Title InnoDB-Induced Denial of Service in Oracle MySQL Server and Cluster mysql: mysql: Denial of Service in InnoDB
References
Metrics threat_severity

None

 threat_severity

Moderate

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

Type Values Removed Values Added
Title InnoDB-Induced Denial of Service in Oracle 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. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/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: 2026-11-05T16:07:14.762Z

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

Link: CVE-2026-101611

cve-icon Vulnrichment

Updated: 2026-11-05T15:57:20.447Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:14.880

Modified: 2026-11-05T17:17:31.227

Link: CVE-2026-101611

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:52Z

Links: CVE-2026-101611 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T23:45:12Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption