Live › vulnerability › CVE-2026-101751
Go to dashboardA flaw in the Group Replication GCS component of MySQL Server and MySQL Cluster lets a highly privileged attacker over the network hang or repeatedly crash the database. The sources describe only availability impact, with no data read or code execution.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Only deployments that run the Group Replication plugin on an affected MySQL Server or MySQL Cluster version are exposed. Standalone servers without Group Replication are not described as affected, and the attacker needs high privileges on the database.
No product ranges from the sources yet.
SELECT @@version; in MySQL to see whether the version is in an affected range (8.4.0 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1, or MySQL Cluster 8.0.0 to 8.0.49).SELECT * FROM performance_schema.replication_group_members;Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
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