CVE-2026-34318

Description

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).

How to fix CVE-2026-34318

To remediate CVE-2026-34318, upgrade the affected package to a fixed version below.

• —upgrade to 8.0.46 or later

Is CVE-2026-34318 being exploited?

Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 8.0.46, >= 8.1.0, < 8.4.9, >= 9.0.0, < 9.7.0

CVSS scores

References (2)

• WEBnvd.nist.gov/vuln/detail/CVE-2026-34318
• WEBwww.oracle.com/security-alerts/cpuapr2026.html