CVE-2026-101799 Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS).
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-101799?
CVE-2026-101799 is a medium-severity vulnerability in Oracle Corporation MySQL Cluster, published on 20 Oct 2026.
Official description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS). 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 access to the physical communication segment attached to the hardware where the MySQL Server, MySQL Cluster executes 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-284
Which versions are affected by CVE-2026-101799?
How do I fix CVE-2026-101799?
No fix has been published for CVE-2026-101799 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-101799 being exploited?
There is no known exploitation of CVE-2026-101799 in the wild and no public exploit code.
Sources
Also known as GHSA-wj66-xr2q-jcxw, UBUNTU-CVE-2026-101799.