Vulnerability in MySQL Server and Cluster by Oracle
CVE-2026-101776

4.9MEDIUM

Key Information:

Vendor

Oracle
Status
Mysql Server
Mysql Cluster
Vendor
CVE Published:
20 October 2026

What is CVE-2026-101776?

A vulnerability has been identified in Oracle's MySQL Server and MySQL Cluster, specifically in the Group Replication Plugin. This security flaw allows an attacker with high privileges and network access to exploit the system through various protocols. Successful exploitation could enable unauthorized users to hang or crash the MySQL services, leading to a denial of service. Affected versions include those from 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, and additional variants of MySQL Cluster from 8.0.0 up to 8.0.49 among others. It is essential to address this vulnerability promptly to maintain system availability and security.

Affected Version(s)

MySQL Cluster 8.0.0-8.0.49

MySQL Cluster 8.4.0-8.4.12

MySQL Cluster 9.7.0-9.7.3

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.