CVE-2026-34272
No fix known EPSS <1%CVSS 6.5
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 9.0.0-9.6.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. 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).
Products: Oracle Corporation MySQL Server
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu 14.04 LTS | mysql-5.5 | no fix |
| Ubuntu 16.04 LTS | percona-server-5.6 | no fix |
| Ubuntu 16.04 LTS | percona-xtradb-cluster-5.6 | no fix |
| Ubuntu 20.04 LTS | mariadb-10.3 | no fix |
| Ubuntu Pro 16.04 LTS | mysql-5.7 | no fix |
| Ubuntu Pro 18.04 LTS | mysql-5.7 | no fix |