CVE-2026-34270

Name of the Vulnerable Software and Affected Versions MySQL Server versions 8.0.0 through 8.0.45 MySQL Server versions 8.4.0 through 8.4.8 MySQL Server versions 9.0.0 through 9.6.0

Description An issue exists in the Group Replication Plugin of MySQL Server. A low-privileged attacker with network access via multiple protocols can exploit this flaw to cause a hang or frequent, repeatable crashes, resulting in a complete denial of service (DOS) of the server.

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