CVE-2026-101781

High

Description

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 unauthenticated attacker with access to the physical communication segment attached to the hardware where the MySQL Server, MySQL Cluster executes to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

SeverityHigh
CVSS8.8
Exploit probability—
ProductOracle Mysql Cluster
PublishedOct 20, 2026
First seenOct 20, 2026

How to fix

Affected products

ProductAffected versionsFixed in
oracle mysql_cluster8.0.0 ≤ v ≤ 8.0.49, 8.4.0 ≤ v ≤ 8.4.12, 9.7.0 ≤ v ≤ 9.7.3, 26.7.0 ≤ v ≤ 26.7.1—
oracle mysql_server8.4.0 ≤ v ≤ 8.4.12, 9.7.0 ≤ v ≤ 9.7.3, 26.7.0 ≤ v ≤ 26.7.1—

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