CVE-2026-34267

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

Description An issue exists in the Server: Optimizer component of Oracle MySQL. A high-privileged attacker with network access via multiple protocols can exploit this flaw to cause a hang or frequently repeatable crash, resulting in a complete denial of service (DoS), which is a condition where the system becomes unavailable to users.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.