Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). 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. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Oracle
  • Mysql Server

Configuration 1 [-]

OR cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-22017 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-22017 cve-icon
https://www.oracle.com/security-alerts/cpuapr2026.html cve-icon cve-icon cve-icon
https://www.oracle.com/security-alerts/cpuapr2026.html#AppendixMSQL cve-icon
History

Thu, 23 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Title MySQL Server Optimizer DoS Vulnerability mysql: Optimizer unspecified vulnerability (CPU Apr 2026)
Weaknesses CWE-770
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 22 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 22 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Wed, 22 Apr 2026 03:15:00 +0000

Type Values Removed Values Added
Title MySQL Server Optimizer DoS Vulnerability
Weaknesses CWE-399
CWE-788

Wed, 22 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
Description Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). 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. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
First Time appeared Oracle
Oracle mysql Server
CPEs cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle mysql Server
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published: 2026-04-21T20:35:10.837Z

Updated: 2026-04-22T14:12:38.085Z

Reserved: 2026-01-05T18:07:34.728Z

Link: CVE-2026-22017

cve-icon Vulnrichment

Updated: 2026-04-22T14:12:34.704Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-21T21:16:28.670

Modified: 2026-04-23T15:01:06.590

Link: CVE-2026-22017

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-21T00:00:00Z

Links: CVE-2026-22017 - Bugzilla