CVE-2026-101728

Awaiting Analysis Awaiting Analysis - Queue

Denial of Service in Oracle MySQL Server

Publication date: 2026-10-20

Last updated on: 2026-10-22

Assigner: Oracle

Description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Pluggable Auth). 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. 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

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-22

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101728

EUVD

EUVD-2026-106129

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	MySQL Server	8.4.0-8.4.12
Oracle Corporation	MySQL Server	9.7.0-9.7.3
Oracle Corporation	MySQL Server	26.7.0-26.7.1
Oracle Corporation	MySQL Cluster	8.0.0-8.0.49
Oracle Corporation	MySQL Cluster	8.4.0-8.4.12
Oracle Corporation	MySQL Cluster	9.7.0-9.7.3
Oracle Corporation	MySQL Cluster	26.7.0-26.7.1

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 MySQL Server and MySQL Cluster. It affects specific versions of these products and allows a low-privileged attacker with network access to cause the server or cluster to hang or crash repeatedly by exploiting the Pluggable Auth component.

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 (e.g., 8.4.0-8.4.12, 9.7.0-9.7.3, etc.), the system is vulnerable. Monitor for unusual crashes or hangs in MySQL services as potential indicators of exploitation.

Impact Analysis

If exploited, this vulnerability can disrupt database services by causing frequent crashes or hangs, leading to downtime and loss of availability for applications relying on MySQL. This impacts operations that depend on continuous database access.

Compliance Impact

This vulnerability causes denial-of-service (DoS) conditions in MySQL Server and Cluster, leading to system unavailability. Unauthorized downtime may violate compliance requirements for data availability in GDPR (Article 32) and HIPAA (Security Rule 164.312).

Mitigation Strategies

Update MySQL Server and MySQL Cluster to versions not affected by this vulnerability. Affected versions include MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 and MySQL Cluster 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1. Apply the latest patches from Oracle to address the issue.

Hi! I’m here to help you understand CVE-2026-101728. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...