---
id: "CVE-2026-101725"
kind: "vulnerability"
aliases: ["CVE-2026-101725"]
title: "MySQL Server and Cluster: low-privileged user can crash the server"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["database", "mysql", "mysql-cluster", "package", "self-hosted"]
not_affected_if: ["no-network-listener", "unaffected-version"]
published_at: "2026-10-20T22:18:27+00:00"
first_seen_at: "2026-10-23T21:57:23+00:00"
updated_at: "2026-10-25T03:55:01+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101725", "first_seen_at": "2026-10-23T21:57:23+00:00"}]
---

# MySQL Server and Cluster: low-privileged user can crash the server

A low-privileged user with network access can trigger a hang or repeatable crash in the MySQL C API component of MySQL Server and MySQL Cluster. The result is denial of service; the sources report no confidentiality or integrity impact.

_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: 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1, and for MySQL Cluster also 8.0.0 to 8.0.49.

## Fix

- Upgrade MySQL Server to a release after the affected ranges (fixed version numbers: unknown in the sources).
- Upgrade MySQL Cluster to a release after the affected ranges (fixed version numbers: unknown in the sources).

## Timeline

- 2026-10-23T21:57:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101725

## From the sources

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

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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_