Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Pluggable Auth). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 6.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

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 Cluster
  • Mysql Server

No data.

No data.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-101774 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-101774 cve-icon
https://www.oracle.com/security-alerts/cpuoct2026.html cve-icon cve-icon cve-icon
History

Thu, 22 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics ssvc

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

Thu, 22 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-287
CWE-770

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated DoS and Data Modification in MySQL Server and Cluster mysql: mysql: Denial of service via Pluggable Authentication component
Weaknesses CWE-303
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 21 Oct 2026 03:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated DoS and Data Modification in MySQL Server and Cluster
Weaknesses CWE-284
CWE-287
CWE-770

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Pluggable Auth). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 6.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).
First Time appeared Oracle
Oracle mysql Cluster
Oracle mysql Server
CPEs cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle mysql Cluster
Oracle mysql Server
References
Metrics cvssV3_1

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

Status: PUBLISHED

Assigner: oracle

Published: 2026-10-20T21:22:51.119Z

Updated: 2026-10-22T17:30:58.049Z

Reserved: 2026-09-28T15:40:09.505Z

Link: CVE-2026-101774

cve-icon Vulnrichment

Updated: 2026-10-22T17:26:37.112Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-10-20T22:18:32.883

Modified: 2026-10-22T18:17:21.610

Link: CVE-2026-101774

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:51Z

Links: CVE-2026-101774 - Bugzilla