CVE-2026-46863
Fixed in a distro release EPSS <1%CVSS 7.5
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 8.4.0-8.4.9, 9.0.0-9.7.0; MySQL Cluster: 8.0.11-8.0.46, 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated 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 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Products: Oracle Corporation MySQL Server, Oracle Corporation MySQL Cluster
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 22.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.22.04.3 |
| Ubuntu 24.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.24.04.3 |
| Ubuntu 25.10 | mariadb | no fix |
| Ubuntu 25.10 | mysql-8.4 | 8.4.10-0ubuntu0.25.10.1 |
| Ubuntu 26.04 LTS | mysql-8.4 | 8.4.10-0ubuntu0.26.04.1 |
| Ubuntu Pro 16.04 LTS | mysql-5.7 | no fix |
| Ubuntu Pro 18.04 LTS | mysql-5.7 | no fix |
| Ubuntu Pro 20.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.20.04.1+esm3 |