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OracleCVE-2026-101773

MySQL Server: denial of service via Group Replication Plugin

Oracle

CVE-2026-101773 · Published Oct 20, 2026 · updated Oct 29, 2026

High7.1
No fix yet
Oracle advisory

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication Plugin). 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 unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 7.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).

Affected versions

PackageAffectedFixed in
MySQL Cluster
Product
<= 8.0.0-8.0.49No fix yet
<= 8.4.0-8.4.12No fix yet
<= 9.7.0-9.7.3No fix yet
<= 26.7.0-26.7.1No fix yet
MySQL Server
Product
<= 8.4.0-8.4.12No fix yet
<= 9.7.0-9.7.3No fix yet
<= 26.7.0-26.7.1No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-284

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