CVE-2026-46936

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: DDL). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1. 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).

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-2026-46936

EUVD

EUVD-2026-46462

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	mysql_server	From 8.4.0 (inc) to 8.4.10 (inc)
oracle	mysql_server	9.7.0
oracle	mysql_server	9.7.1
oracle	mysql_cluster	From 8.0.0 (inc) to 8.0.47 (inc)
oracle	mysql_cluster	From 8.4.0 (inc) to 8.4.10 (inc)
oracle	mysql_cluster	9.7.0
oracle	mysql_cluster	9.7.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a denial-of-service (DoS) vulnerability in Oracle MySQL Server and MySQL Cluster. It affects specific versions of these products and allows a high-privileged attacker with network access to cause the server or cluster to hang or crash repeatedly, leading to complete unavailability.

Detection Guidance

This vulnerability affects MySQL Server and MySQL Cluster versions listed. Detection requires checking installed versions against affected releases. Use commands like 'mysql --version' or 'mysqld --version' to identify MySQL Server version. For MySQL Cluster, check 'ndb_mgmd --version' or 'ndbd --version'. Compare versions against 8.4.0-8.4.10, 9.7.0-9.7.1 for Server and 8.0.0-8.0.47, 8.4.0-8.4.10, 9.7.0-9.7.1 for Cluster.

Impact Analysis

If you use affected versions of MySQL Server or MySQL Cluster, an attacker could exploit this flaw to disrupt database operations, causing downtime and preventing access to critical data or services.

Compliance Impact

This vulnerability could lead to violations of compliance requirements that mandate data availability and system reliability, such as GDPR's data integrity principles or HIPAA's access controls, due to potential service disruptions.

Mitigation Strategies

Upgrade MySQL Server to versions 8.4.11 or later, or 9.7.2 or later. For MySQL Cluster, upgrade to versions 8.0.48 or later, 8.4.11 or later, or 9.7.2 or later. Apply patches as soon as possible to prevent denial-of-service attacks.

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