CVE-2026-49261: MariaDB

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through 10.11.17, 11.4.1 through 11.4.11, 11.8.1 through 11.8.7, and 12.3.1 with `wsrep_notify_cmd` enabled would execute shell commands embedded in the name of the joiner node. This is fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. As a workaround, anyone who cannot upgrade now should disable `wsrep_notify_cmd`.

Affected products

• MariaDB MariaDB: from 10.6.1, before 10.6.27 (fixed in 10.6.27); from 10.11.1, before 10.11.18 (fixed in 10.11.18); from 11.4.1, before 11.4.12 (fixed in 11.4.12); from 11.8.1, before 11.8.8 (fixed in 11.8.8); version 12.3.1 only

Published 2026-06-11. Last modified 2026-08-12.