CVE-2026-34303
Public on 2026-04-21
Modified on 2026-04-24
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).
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | mariadb | Pending Fix | ||
| Amazon Linux 2023 | mariadb1011 | 2026-06-08 | ALAS2023-2026-1811 | Fixed |
| Amazon Linux 2023 | mariadb1011 | 2026-06-22 | ALAS2023-2026-1844 | Fixed |
| Amazon Linux 2023 | mariadb105 | No Fix Planned | ||
| Amazon Linux 2023 | mariadb114 | 2026-06-12 | ALAS2023-2026-1827 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |