CVE-2026-49261 MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`
Attackers can execute arbitrary shell commands via node names if wsrep_notify_cmd is enabled in MariaDB server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-49261?
CVE-2026-49261 is a critical command injection vulnerability in Mariadb Mariadb, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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`.
Weakness: CWE-78
Which versions are affected by CVE-2026-49261?
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 |
Linux distribution packages (37)
galera AlmaLinux:10 | All versions | 26.4.27-1.el10_2 |
mariadb AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-backup AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-client-utils AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-common AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-devel AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-embedded AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-embedded-devel AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-errmsg AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-gssapi-server AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-oqgraph-engine AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-pam AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-server AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-server-galera AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-server-utils AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb-test AlmaLinux:10 | All versions | 3:10.11.18-1.el10_2.alma.1 |
mariadb11.8 AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-backup AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-client-utils AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-common AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-devel AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-embedded AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-embedded-devel AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-errmsg AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-gssapi-server AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-oqgraph-engine AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-pam AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-server AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-server-galera AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-server-utils AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
mariadb11.8-test AlmaLinux:10 | All versions | 3:11.8.8-1.el10_2 |
galera AlmaLinux:9 | All versions | 26.4.27-1.module_el9.8.0+274+ad8c02e7 |
galera AlmaLinux:9 | All versions | 26.4.27-1.module_el9.8.0+275+ff40c56f |
galera AlmaLinux:9 | All versions | 26.4.27-1.module_el9.8.0+315+b08bed7e |
mariadb AlmaLinux:9 | All versions | 3:10.11.18-1.module_el9.8.0+275+ff40c56f |
mariadb AlmaLinux:9 | All versions | 3:10.11.18-1.module_el9.8.0+315+b08bed7e.alma.1 |
mariadb AlmaLinux:9 | All versions | 3:11.8.8-1.module_el9.8.0+274+ad8c02e7 |
Products include Mariadb Mariadb.
How do I fix CVE-2026-49261?
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-2026-49261 being exploited?
There is no known exploitation of CVE-2026-49261 in the wild and no public exploit code.
Other vulnerabilities in Mariadb Mariadb
- 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
- CVE-2026-97380 MariaDB: GRANT PROXY with empty password incorrectly checks grantor's privileges
Sources
Also known as ALSA-2026:33093, ALSA-2026:33412, ALSA-2026:33481, ALSA-2026:33482, BELL-CVE-2026-49261, BIT-mariadb-2026-49261 and 17 more.