---
id: "CVE-2026-101724"
kind: "vulnerability"
aliases: ["CVE-2026-101724"]
title: "MySQL Server: InnoDB flaw lets a privileged user crash the database"
severity: "medium"
cvss: 4.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["databases", "mysql", "package", "self-hosted"]
not_affected_if: ["unaffected-version"]
published_at: "2026-10-20T22:18:27+00:00"
first_seen_at: "2026-10-23T21:57:23+00:00"
updated_at: "2026-10-25T04:31:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101724", "first_seen_at": "2026-10-23T21:57:23+00:00"}]
---

# MySQL Server: InnoDB flaw lets a privileged user crash the database

A flaw in the InnoDB storage engine of MySQL Server and MySQL Cluster can be triggered over the network by a highly privileged account to hang or repeatedly crash the server. The attacker gets denial of service only; the sources report no data read or code execution.

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

## How to check

- Run `SELECT VERSION();` on the MySQL server and compare against the affected ranges: 8.0.0-8.0.49 (Cluster only), 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1
- unknown for other checks: the sources do not list configuration details

## Fix

- Move MySQL Server or Cluster to a release outside the affected ranges, as published in the Oracle Critical Patch Update advisory (version numbers not given in the sources)
- unknown for the exact fixed version: the sources do not name it

## Timeline

- 2026-10-23T21:57:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101724

## From the sources

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

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_