CVE-2026-34318: Oracle MySQL

Medium severity, CVSS 5.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Shell. While the vulnerability is in MySQL Shell, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Shell accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N).

Affected products

• Oracle MySQL: from 8.0.0, up to and including 8.0.45; from 8.4.0, up to and including 8.4.8; from 9.0.0, up to and including 9.6.0

Published 2026-04-21. Last modified 2026-06-17.