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 takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | MySQL Server | 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 | — |
| Oracle | MySQL Cluster | 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mariadb | No fix yet | — |
| Ubuntu 26.10 | mysql-9.7 | 9.7.4-0ubuntu0.26.10.1 | USN-9046-1 |
| Ubuntu 26.04 LTS | mariadb | No fix yet | — |
| Ubuntu 26.04 LTS | mysql-8.4 | 8.4.13-0ubuntu0.26.04.2 | USN-9046-1 |
| Ubuntu 24.04 LTS | mariadb | No fix yet | — |
| Ubuntu 24.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.24.04.5 | USN-9046-1 |
| Ubuntu 22.04 LTS | mariadb-10.6 | No fix yet | — |
| Ubuntu 22.04 LTS | mysql-8.0 | 8.0.46-0ubuntu0.22.04.5 | USN-9046-1 |
| Ubuntu 20.04 LTS | mariadb-10.3 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mariadb-10.1 | No fix yet | — |
| Ubuntu 16.04 LTS | mariadb-10.0 +2 | No fix yet | — |
| Ubuntu 14.04 LTS | mysql-5.5 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | mysql-8.0 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | mysql-5.7 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | mysql-5.7 | No fix yet | — |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | mecab | 0.996-3.module+el9.8.0+40162+a76274f1.4 | RLSA-2026:99741 |
| Rocky Linux 9 | mecab-ipadic | 2.7.0.20070801-24.module+el9.8.0+40162+a76274f1 | RLSA-2026:99741 |
| Rocky Linux 9 | perl-DBD-MySQL | 4.053-3.module+el9.8.0+40162+a76274f1 | RLSA-2026:99741 |
Advisories 4
- RLSA-2026:99741 Important: mysql:8.4 security update Rocky Linux Security Advisories · Nov 13, 2026
- WID-SEC-2026-4081 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- USN-9046-1 mysql-8.0, mysql-8.4, mysql-9.7 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- NCSC-2026-0441 Kwetsbaarheden verholpen in Oracle MySQL NCSC-NL (Netherlands) · Oct 21, 2026
References
- Oracle Advisory vendor-advisory