Denial of Service Vulnerability in MySQL Server and MySQL Cluster by Oracle
CVE-2026-101801

4.9MEDIUM

Key Information:

Vendor

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

What is CVE-2026-101801?

A vulnerability exists in the Oracle MySQL Server and MySQL Cluster products, which could be exploited by a high-privileged attacker with network access. The flaw can lead to a denial of service, causing MySQL Server and Cluster instances to hang or crash repeatedly. Affected versions include MySQL Server 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, and 26.7.0 to 26.7.1, as well as MySQL Cluster 8.0.0 to 8.0.49 and similar versions. This vulnerability emphasizes the need for users to implement security measures to protect their database environments.

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

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