CVE-2026-61109

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: JSON). 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. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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-2026-61109

EUVD

EUVD-2026-47320

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

Attack-Flow Graph

Executive Summary

This is a denial-of-service (DoS) vulnerability in MySQL Server and MySQL Cluster. It affects JSON-related components and allows low-privileged attackers with network access to crash the database server repeatedly or cause it to hang.

Detection Guidance

This vulnerability affects MySQL Server and MySQL Cluster versions listed in the CVE. To detect it, check your MySQL version using commands like 'mysql --version' or 'mysqld --version'. If your version falls within the affected ranges (8.4.0-8.4.10, 9.7.0-9.7.1 for Server or 8.0.0-8.0.47, 8.4.0-8.4.10, 9.7.0-9.7.1 for Cluster), the system is vulnerable.

Impact Analysis

If exploited, this vulnerability can disrupt database operations by causing crashes or hangs, leading to downtime and loss of availability for applications relying on MySQL.

Compliance Impact

This vulnerability primarily causes denial-of-service (DoS) conditions in MySQL Server and Cluster, leading to system unavailability. For GDPR, this could impact data processing operations requiring continuous availability. HIPAA requires safeguards for data availability; prolonged outages may violate compliance.

Mitigation Strategies

Upgrade MySQL Server and MySQL Cluster to versions 8.4.11 or later, or 9.7.2 or later, depending on your current installation. Apply the latest patches from Oracle to address the vulnerability.

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