Improper input validation in MySQL Cluster - CVE-2026-101773
Published: November 10, 2026
Vulnerability identifier: #VU163953
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-101773
CWE-ID: CWE-125
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to damange or delete data.
The vulnerability exists due to improper input validation within the Server: Group Replication Plugin component in MySQL Cluster. A remote non-authenticated attacker can exploit this vulnerability to damange or delete data.
Affected software
MySQL Cluster
MySQL Server
Ubuntu
mysql-server-8.0 (Ubuntu package)
mysql-server (Ubuntu package)
MySQL Server
Ubuntu
mysql-server-8.0 (Ubuntu package)
mysql-server (Ubuntu package)
How to mitigate CVE-2026-101773
Install updates from vendor's website.
mysql-server-8.0 (Ubuntu package) - addressed in versions 8.0.46-0ubuntu0.22.04.5, 8.0.46-0ubuntu0.24.04.5
mysql-server (Ubuntu package) - addressed in versions 8.4.13-0ubuntu0.26.04.2, 9.7.4-0ubuntu0.26.10.1
mysql-server (Ubuntu package) - addressed in versions 8.4.13-0ubuntu0.26.04.2, 9.7.4-0ubuntu0.26.10.1