What is CVE-2026-46863?

CVE-2026-46863 is a high-severity vulnerability in Oracle MySQL Cluster, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-06-17.

How severe is CVE-2026-46863?

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

Resource exhaustion in Oracle MySQL Cluster

CVE-2026-46863

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 8.4.0-8.4.9, 9.0.0-9.7.0; MySQL Cluster: 8.0.11-8.0.46, 8.4.0-8.4.9 and 9.0.0-9.7.0. 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).

Vulnerability class: DoS (Denial of Service)

EPSS: 0.005 (39.6th percentile) — read the EPSS interpretation.

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.

Affected products

Oracle Mysql_cluster
Oracle Mysql_server
Oracle Corporation Mysql Cluster — versions 8.0.11-8.0.46, 8.4.0-8.4.9, 9.0.0-9.7.0
Oracle Corporation Mysql Server — versions 8.4.0-8.4.9, 9.0.0-9.7.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

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

Frequently asked questions

What is CVE-2026-46863?: CVE-2026-46863 is a high-severity vulnerability in Oracle MySQL Cluster, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-06-17.
How severe is CVE-2026-46863?: High severity. CVSS v3 base score is 7.5 out of 10.