CVE WatchOct 21, 2026

CVE-2026-101776

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication Plugin). Supported versions

CVSS

4.9

Medium

EPSS

0.3%

p21

KEV

—

Exploit Today

0-100

Published: Oct 20, 2026 · Last modified: Oct 21, 2026

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-10-212026-10-26

Technical description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication Plugin). 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 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).

Official references

www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2026.html

Related CVEs

No related CVEs by CWE or product.