CVE-2026-107822: MariaDB Server

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB's ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal's database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

Affected products

• MariaDB Server: from 10.6.1, before 10.6.28 (fixed in 10.6.28); from 10.11.1, before 10.11.19 (fixed in 10.11.19); from 11.4.1, before 11.4.13 (fixed in 11.4.13); from 11.8.1, before 11.8.9 (fixed in 11.8.9); from 12.3.1, before 12.3.3 (fixed in 12.3.3); from 13.0.1, before 13.0.2 (fixed in 13.0.2)

Published 2026-10-09. Last modified 2026-10-09.