CVE-2026-21965

Low

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Pluggable Auth). Supported versions that are affected are 9.0.0-9.5.0. Easily exploitable vulnerability allows high 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L).

SeverityLow

CVSS2.7

Exploit probability—

Product

Oracle Mysql Server

PublishedJan 20, 2026

First seenJan 20, 2026

How to fix

Vendor advisories

oracle.com/security-alerts/cpujan2026.html

Affected products

Product	Affected versions	Fixed in
oracle mysql_server	9.0.0 ≤ v ≤ 9.5.0	—

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