CVE-2026-34278

Name of the Vulnerable Software and Affected Versions MySQL Server versions 8.0.0 through 8.0.45

Description An issue in the Server: Optimizer component of Oracle MySQL allows a high privileged attacker with network access via multiple protocols to compromise the server. Successful exploitation can lead to a hang or frequently repeatable crash, resulting in a complete denial of service (DOS), which is a condition where the system becomes unavailable to legitimate users.

Recommendations Update MySQL Server to a version later than 8.0.45.