What is CVE-2026-61128?

CVE-2026-61128 is a medium-severity vulnerability in Oracle MySQL Cluster, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2026-07-21.

How severe is CVE-2026-61128?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Resource exhaustion in Oracle MySQL Cluster

CVE-2026-61128

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are MySQL Server: 9.7.0-9.7.1; MySQL Cluster: 9.7.0-9.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Vulnerability class: DoS (Denial of Service)

EPSS: 0.004 (37.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Oracle Mysql_cluster — versions 9.7.0, 9.7.1
Oracle Mysql_server — versions 9.7.0, 9.7.1
Oracle Corporation Mysql Cluster — versions 9.7.0-9.7.1
Oracle Corporation Mysql Server — versions 9.7.0-9.7.1

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

secalert_us@oracle.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-61128?: CVE-2026-61128 is a medium-severity vulnerability in Oracle MySQL Cluster, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2026-07-21.
How severe is CVE-2026-61128?: Medium severity. CVSS v3 base score is 4.9 out of 10.