Vulnerability · Published Oct 20, 2026 · Assigned by oracle
CVE-2026-101773
High 7.1
In plain English
A high-severity improper access control in MySQL Cluster from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Official 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 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 as well as unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 7.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:24.04:LTS | mariadb | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:26.04:LTS | mariadb | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:26.10 | mariadb | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:22.04:LTS | mariadb-10.6 | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:22.04:LTS | mysql-8.0 | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:24.04:LTS | mysql-8.0 | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:26.04:LTS | mysql-8.4 | no fix listed | UBUNTU-CVE-2026-101773 |
| Ubuntu:26.10 | mysql-9.7 | no fix listed | UBUNTU-CVE-2026-101773 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Oracle Corporation | MySQL Server | 8.4.0-8.4.129.7.0-9.7.326.7.0-26.7.1 |
| Oracle Corporation | MySQL Cluster | 8.0.0-8.0.498.4.0-8.4.129.7.0-9.7.326.7.0-26.7.1 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
References
- Oracle Advisory vendor-advisory