A vulnerability exists in the MySQL Server product of Oracle MySQL, specifically in the Server Parser component. It affects supported versions 8.0.40 and prior, 8.4.3 and prior, and 9.1.0 and prior. The flaw allows a low-privileged attacker with network access to cause a denial of service by hanging or crashing the MySQL Server. The CVSS 3.1 base score is 6.5, indicating a medium severity with impact on availability only.