SB2026020337 - Ubuntu update for mysql-8.0

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Main Vulnerability Database SB2026020337

SB2026020337 - Ubuntu update for mysql-8.0

Published: February 3, 2026

Security Bulletin ID SB2026020337
Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Improper input validation (CVE-ID: CVE-2026-21968)

The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote authenticated user can exploit this vulnerability to perform a denial of service (DoS) attack.


2) Improper input validation (CVE-ID: CVE-2026-21964)

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Thread Pooling component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


3) Improper input validation (CVE-ID: CVE-2026-21948)

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


4) Improper input validation (CVE-ID: CVE-2026-21941)

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


5) Improper input validation (CVE-ID: CVE-2026-21937)

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: DDL component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


6) Improper input validation (CVE-ID: CVE-2026-21936)

The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References