Network Attack Vulnerability in MySQL Server and MySQL Cluster by Oracle
CVE-2026-101798

4.9MEDIUM

Key Information:

Vendor

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

What is CVE-2026-101798?

A vulnerability exists in Oracle's MySQL Server and MySQL Cluster that allows a highly privileged attacker with network access to exploit the system through various protocols. This vulnerability can lead to unauthorized effects, causing the MySQL Server and Cluster to hang or crash consistently, resulting in denial of service. Users are advised to review their systems for affected versions and implement recommended security measures to mitigate risks.

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

.