How severe is CVE-2026-101679?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Oracle Corporation MySQL Cluster

CVE-2026-101679

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client programs). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows unauthenticated 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 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Published 2026-10-20.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Oracle Corporation MySQL Cluster — versions 26.7.0-26.7.1, 8.0.0-8.0.49, 8.4.0-8.4.12
Oracle Corporation MySQL Server — versions 26.7.0-26.7.1, 8.4.0-8.4.12, 9.7.0-9.7.3

References

www.oracle.com/security-alerts/cpuoct2026.html (vendor-advisory)

Frequently asked questions

What is CVE-2026-101679?: CVE-2026-101679 is a high-severity vulnerability in Oracle Corporation MySQL Cluster. CVSS score: 7.5/10. Published 2026-10-20.
How severe is CVE-2026-101679?: High severity. CVSS v3 base score is 7.5 out of 10.