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Vulnerability · Published Apr 21, 2026 · Assigned by oracle

CVE-2026-34318

Medium 5.8

In plain English

A medium-severity information exposure in MySQL Shell from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.8Medium
Exploit odds (30 days)0.3%top 81.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSmysql-8.08.0.46-0ubuntu0.22.04.2USN-8363-1
Ubuntu:22.04:LTSmysql-8.08.0.46-0ubuntu0.22.04.2UBUNTU-CVE-2026-34318
Ubuntu:24.04:LTSmysql-8.08.0.46-0ubuntu0.24.04.2UBUNTU-CVE-2026-34318
Ubuntu:24.04:LTSmysql-8.08.0.46-0ubuntu0.24.04.2USN-8363-1
Ubuntu:25.10mysql-8.48.4.9-0ubuntu0.25.10.1USN-8363-1
Ubuntu:25.10mysql-8.48.4.9-0ubuntu0.25.10.1UBUNTU-CVE-2026-34318
Ubuntu:26.04:LTSmysql-8.48.4.9-0ubuntu0.26.04.1USN-8363-1
Ubuntu:26.04:LTSmysql-8.48.4.9-0ubuntu0.26.04.1UBUNTU-CVE-2026-34318

Affected products (as reported)

VendorProductVersions
Oracle Corporation MySQL Shell 8.0.0 – through 8.0.458.4.0 – through 8.4.89.0.0 – through 9.6.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

References