Denial of Service in MySQL Server

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Oracle

Description

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

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Meta Information

Published

2026-07-21

Last Modified

2026-07-21

Generated

2026-07-22

AI Q&A

2026-07-22

EPSS Evaluated

N/A

NVD

CVE-2026-47008

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_server	From 9.7.0 (inc) to 9.7.1 (inc)
oracle	mysql_cluster	From 9.7.0 (inc) to 9.7.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a denial-of-service vulnerability in Oracle MySQL Server and MySQL Cluster versions 9.7.0 to 9.7.1. It allows a high-privileged attacker with network access to cause the server or cluster to hang or crash repeatedly by exploiting a flaw in the InnoDB component.

Impact Analysis

If you use MySQL Server or MySQL Cluster versions 9.7.0-9.7.1, an attacker could exploit this to make your database unavailable, causing downtime and disrupting services that rely on MySQL.

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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