CVE-2026-107818

Summary

MariaDB service configuration flaw allows attackers with FILE privilege to inject environment variables into the restarted service, potentially leading to arbitrary code execution or privilege escalation. This affects versions from 10.6.1 through 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2, and 13.0.1.

Exploitability

Exploitation requires a database user with FILE privilege who can write to /run/mysqld directory, making it moderately difficult but possible with proper access.

Blast radius

If exploited, this flaw could allow attackers to execute arbitrary code as the MariaDB service account, potentially leading to full database server compromise and lateral movement within the infrastructure.

Detection

Monitor for creation of /run/mysqld/wsrep-new-cluster files by database users, and watch for unexpected service restarts or environment variable changes in MariaDB process startup logs.

Prioritized remediation

Upgrade to MariaDB 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, or 13.0.2 immediately.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.