CVE-2026-61128

Analyzed Analyzed - Analysis Complete

Denial of Service in MySQL Server

Publication date: 2026-07-21

Last updated on: 2026-07-27

Assigner: Oracle

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 9.7.0-9.7.1; MySQL Cluster: 9.7.0-9.7.1. 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).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-27

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-61128

EUVD

EUVD-2026-47337

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_server	9.7.0
oracle	mysql_server	9.7.1
oracle	mysql_cluster	9.7.0
oracle	mysql_cluster	9.7.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a vulnerability in MySQL Server and MySQL Cluster versions 9.7.0 to 9.7.1. It affects the Server: Optimizer component. A high-privileged attacker with network access can exploit it to cause a denial of service (DOS) by making the server hang or crash repeatedly.

Detection Guidance

This vulnerability affects MySQL Server and MySQL Cluster versions 9.7.0 to 9.7.1. To detect it, check the installed version of MySQL Server or MySQL Cluster on your system. If the version falls within the affected range, the system is vulnerable.

Impact Analysis

If you use MySQL Server or MySQL Cluster versions 9.7.0 to 9.7.1, an attacker could disrupt database operations by causing crashes or hangs. This leads to downtime and potential loss of availability for your applications relying on MySQL.

Compliance Impact

This vulnerability primarily impacts availability. While it does not directly expose data, prolonged downtime could lead to non-compliance with regulations like GDPR or HIPAA that require timely access to personal or health data. Ensure proper mitigation to maintain compliance.

Mitigation Strategies

Upgrade MySQL Server and MySQL Cluster to versions beyond 9.7.1 to address the vulnerability. Apply the latest patches from Oracle as soon as they are available.

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