CVE-2026-48165 MariaDB: unsafe usage of `wsrep_sst_receive_address` values on the joiner side
A high-privileged MariaDB user can execute shell commands on the joiner node by manipulating specific Galera SST configuration variables.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48165?
CVE-2026-48165 is a high-severity command injection vulnerability in Mariadb Mariadb, published on 12 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to before 11.8.8, and 12.3.1, a high-privileged MariaDB user could've used wsrep_sst_receive_address or wsrep_sst_donor global system variables to execute shell commands as the uid of the mariadbd process on the galera joiner node. This issue has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2.
Weakness: CWE-78
Which versions are affected by CVE-2026-48165?
3 open source packages ship an affected version, including mariadb, mariadb-min and mysql-client. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mariadb Bitnami | From 10.6.1 | 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 |
mariadb-min Bitnami | From 10.6.1 | 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 |
mysql-client Bitnami | From 10.6.1 | 10.6.27, 10.11.18, 11.4.12, 11.8.8, 12.3.2 |
Products include Mariadb Mariadb.
How do I fix CVE-2026-48165?
Upgrade mariadb to a fixed version for your release line: 10.6.27, 10.11.18, 11.4.12 or 11.8.8.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-48165 being exploited?
There is no known exploitation of CVE-2026-48165 in the wild and no public exploit code.
Other vulnerabilities in Mariadb Mariadb
- CVE-2026-49261 MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`
- CVE-2026-85746 MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections
- CVE-2026-85748 MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
- CVE-2026-92262 MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.
- CVE-2023-26785 Code injection in n/a
Sources
Also known as ALPINE-CVE-2026-48165, BELL-CVE-2026-48165, BIT-mariadb-2026-48165, BIT-mariadb-min-2026-48165, BIT-mysql-client-2026-48165, DEBIAN-CVE-2026-48165 and 10 more.