Live › vulnerability › CVE-2026-101788
Go to dashboardA flaw in the MySQL Server Components Services component lets an unauthenticated network attacker hang or repeatedly crash MySQL Server and MySQL Cluster. The sources describe only availability impact, with no confidentiality or integrity loss.
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.
Any MySQL Server or MySQL Cluster deployment on an affected version that accepts network connections is in scope, since the attack arrives over several network protocols. Instances bound only to localhost or behind a firewall that blocks database ports face much less exposure. The sources do not say whether a default configuration is affected.
No product ranges from the sources yet.
SELECT VERSION(); on the MySQL server and compare against the affected ranges: 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1, and for MySQL Cluster also 8.0.0 to 8.0.49.8.0.49, and 8.4.x and 9.7.x to fixed releases (exact versions: unknown in the sources).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: Components Services). 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. Difficult to exploit vulnerability allows unauthenticated 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
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