Denial of Service Vulnerability in MySQL Server and MySQL Cluster by Oracle
CVE-2026-46863

7.5HIGH

Key Information:

Vendor

Oracle
Status
Mysql Server
Mysql Cluster
Vendor
CVE Published:
16 June 2026

What is CVE-2026-46863?

A vulnerability exists within Oracle's MySQL Server and MySQL Cluster that enables unauthenticated attackers with network access via multiple protocols to disrupt service. This flaw can lead to the unauthorized ability to cause the MySQL Server and MySQL Cluster to hang or crash, resulting in a complete denial of service. The affected versions span from MySQL Server 8.4.0 to 8.4.9 and from 9.0.0 to 9.7.0, as well as various MySQL Cluster versions. Organizations utilizing affected versions are strongly advised to patch their systems to mitigate potential disruptions.

Affected Version(s)

MySQL Cluster 8.0.11-8.0.46

MySQL Cluster 8.4.0-8.4.9

MySQL Cluster 9.0.0-9.7.0

References

https://www.oracle.com/security-alerts/cspujun2026.html
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.