Improper input validation in MySQL Cluster - CVE-2026-47023

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Main Vulnerability Database Vulnerabilities #VU160801

Improper input validation in MySQL Cluster - CVE-2026-47023

Published: November 7, 2026


Vulnerability identifier: #VU160801
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-47023
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Replication component in MySQL Cluster. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


Affected software

MySQL Cluster
MySQL Server
Ubuntu
mysql-server-8.0 (Ubuntu package)
mysql-server (Ubuntu package)

How to mitigate CVE-2026-47023

Install updates from vendor's website.

mysql-server-8.0 (Ubuntu package) - addressed in versions 8.0.46-0ubuntu0.22.04.4, 8.0.46-0ubuntu0.24.04.4
mysql-server (Ubuntu package) - update to 8.4.11-0ubuntu0.26.04.1

External References

Related Security Bulletins