Vulnerability in MariaDB server

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• BSI CERT-Bund11 Oct 2026WID-SEC-2026-3856

  MariaDB: Multiple vulnerabilities Translated from German

  CVE-2026-107814CVE-2026-107815CVE-2026-107821+6 more CVEs

[ References ]References

• github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064bPatch
• github.com/MariaDB/server/releases/tag/mariadb-10.11.19Release Notes
• github.com/MariaDB/server/releases/tag/mariadb-10.6.28Release Notes
• github.com/MariaDB/server/releases/tag/mariadb-11.4.13Release Notes
• github.com/MariaDB/server/releases/tag/mariadb-11.8.9Release Notes
• github.com/MariaDB/server/releases/tag/mariadb-12.3.3Release Notes
• github.com/MariaDB/server/releases/tag/mariadb-13.0.2Release Notes
• github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rfVendor Advisory
• jira.mariadb.org/browse/MDEV-40541Issue Tracking