High Priv MySQL Optimizer DoS 8.0.0-8.0.45,8.4.0-8.4.8,9.0.0-9.6.0
CVE-2026-35240 Published on April 21, 2026
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 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 hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Vulnerability Analysis
CVE-2026-35240 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2026-35240 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2026-35240
stack.watch emails you whenever new vulnerabilities are published in Oracle or Oracle MySQL. Just hit a watch button to start following.
Affected Versions
Oracle Corporation MySQL Server:- Version 8.0.0, <= 8.0.45 is affected.
- Version 8.4.0, <= 8.4.8 is affected.
- Version 9.0.0, <= 9.6.0 is affected.