---
id: CVE-2026-101616
title: 'mysql: MySQL: Denial of Service via JSON component (CVE-2026-101616)'
summary: >-
  A flaw was found in the JSON component of MySQL Server and MySQL Cluster. A
  remote attacker with low-level privileges and network access can exploit this
  vulnerability to cause the server to hang or crash repeatedly. Successful
  exploitatio…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-20
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
  - enterprise_linux 9
published: '2026-10-20'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T19:20:51+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101616.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101616.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-101616'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2557799'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-101616'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101616'
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00394
epssPercentile: 0.3342
ingestedAt: '2026-10-20T22:23:33.971Z'
---

## Overview

A flaw was found in the JSON component of MySQL Server and MySQL Cluster. A remote attacker with low-level privileges and network access can exploit this vulnerability to cause the server to hang or crash repeatedly. Successful exploitation results in a complete Denial of Service (DoS) of the affected database service.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101616.json)

**mysql: MySQL: Denial of Service via JSON component** — rated Moderate by Red Hat. Released 2026-10-20, updated 2026-10-23.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Hardened Images

## Remediation

Affected