# CVE-2026-34318: Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). Supported versions that are affected are 8.0.0-8.

Source: https://junglewise.ai/threats/cve-2026-34318-vulnerability-in-the-mysql-shell-product-of-oracle-mysql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-21  
License: CC BY 4.0 with a link back

CVE-2026-34318 · Severity: medium · CVSS 5.8 · Published 2026-04-21

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).

Technologies: [Oracle Mysql](https://junglewise.ai/threats/technologies/mysql). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-34318 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34318 being exploited in the wild.

**How severe is CVE-2026-34318?** Medium severity, with a CVSS score of 5.8, published 21 April 2026.

**Which products and versions are affected?** Oracle Mysql. The advisory does not name versions.

**Is there a fix for CVE-2026-34318?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-34318?** Check whether you run Oracle Mysql. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Oracle Mysql

## Related threats

- [Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). Supported versions that are affected are 8.0.0-8.](https://junglewise.ai/threats/cve-2026-34319-vulnerability-in-the-mysql-shell-product-of-oracle-mysql)
- [Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). Supported versions that are affected are 8.0.0-8.](https://junglewise.ai/threats/cve-2026-34317-vulnerability-in-the-mysql-shell-product-of-oracle-mysql)
- [Oracle MySQL Server information disclosure in Encryption subcomponent](https://junglewise.ai/threats/cve-2017-3320-oracle-mysql-server-information-disclosure-in-encryption)
- [Oracle MySQL Server information disclosure in X Plugin](https://junglewise.ai/threats/cve-2017-3319-oracle-mysql-server-information-disclosure-in-x-plugin)
- [Oracle MySQL Server denial of service in Replication component](https://junglewise.ai/threats/cve-2017-3256-oracle-mysql-server-denial-of-service-in-replication-component)