---
id: "CVE-2026-101754"
kind: "vulnerability"
aliases: ["CVE-2026-101754"]
title: "MySQL Server and Cluster: high-privilege client flaw can crash the server"
severity: "medium"
cvss: 4.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["database", "mysql", "package", "self-hosted"]
not_affected_if: ["default-config"]
published_at: "2026-10-20T22:18:30+00:00"
first_seen_at: "2026-10-23T21:57:23+00:00"
updated_at: "2026-10-25T04:37:00+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101754", "first_seen_at": "2026-10-23T21:57:23+00:00"}]
---

# MySQL Server and Cluster: high-privilege client flaw can crash the server

A flaw in the MySQL client programs component of MySQL Server and MySQL Cluster lets a highly privileged, network-connected attacker cause a hang or repeatable crash of the server. The advisory describes a denial-of-service impact only, with no confidentiality or integrity loss.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `mysqld --version` and compare against the affected ranges: 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, 26.7.0-26.7.1.

## Fix

- Upgrade MySQL Server or MySQL Cluster to a release outside the affected ranges; the sources do not name the fixed version numbers.

## Timeline

- 2026-10-23T21:57:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101754

## From the sources

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client programs).  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. 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).

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