XML Vulnerability in MySQL Server and MySQL Cluster by Oracle
CVE-2026-101803

6.5MEDIUM

Key Information:

Vendor

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

What is CVE-2026-101803?

A vulnerability in the MySQL Server and MySQL Cluster products from Oracle allows a high-privileged attacker to exploit the system through various network protocols. This weakness can lead to unauthorized alterations, deletions, and creations of critical data, as well as cause significant disruptions, including crashes of the MySQL Server and MySQL Cluster systems. The supported versions within the defined range exhibit this exploitable flaw, posing serious risks to data integrity and availability.

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:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.