CVE-2026-101751

A flaw was found in MySQL. An authenticated, remote attacker with high privileges could cause a complete Denial of Service (DoS) by exploiting a vulnerability in the Group Replication component over the network. Successful exploitation causes the server or cluster to hang or crash repeatedly, disrupting database availability.

This vulnerability is rated as having a Moderate impact for Red Hat Enterprise Linux environments because exploiting it requires high-level administrative privileges over the network and only affects system availability without compromising confidentiality or integrity. In standard Red Hat deployments, Group Replication is not enabled by default, significantly limiting the exposed attack surface unless high-availability clustering has been explicitly configured. Consequently, the issue is restricted to systems utilizing this optional replication topology and cannot be leveraged by unauthenticated or low-privileged users.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.