CVE-2026-49261: MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`

Published Jun 11, 2026
·
Updated

Last updated 11 July 2026

Other sources

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 wsrepnotifycmd 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 wsrepnotifycmd.

— Red Hat

Affected Software

7 affected componentsFixes available
MariaDB MariaDB Server>=10.6.1<=10.6.26, >=10.11.1<=10.11.17, >=11.4.1<=11.4.11, >=11.8.1<=11.8.7, =12.3.1
MariaDB MariaDB>=10.6.1<10.6.27
MariaDB MariaDB>=10.11.1<10.11.18
MariaDB MariaDB>=11.4.1<11.4.12
MariaDB MariaDB>=11.8.1<11.8.8
MariaDB MariaDB=12.3.1
debian/mariadb<=1:11.8.6-0+deb13u1
1:10.11.18-0+deb12u11:11.8.8-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/mariadb to a version that resolves this vulnerability.

    Fixed in 1:10.11.18-0+deb12u1Fixed in 1:11.8.8-1
  2. Upgrade

    Upgrade MariaDB server to a version that resolves this vulnerability.

    Fixed in 10.6.27
  3. Upgrade

    Upgrade MariaDB server to a version that resolves this vulnerability.

    Fixed in 10.11.18
  4. Upgrade

    Upgrade MariaDB server to a version that resolves this vulnerability.

    Fixed in 11.4.12
  5. Upgrade

    Upgrade MariaDB server to a version that resolves this vulnerability.

    Fixed in 11.8.8
  6. Upgrade

    Upgrade MariaDB server to a version that resolves this vulnerability.

    Fixed in 12.3.2
  7. Configuration

    As a workaround for systems that cannot upgrade, disable wsrep_notify_cmd.

    MariaDB server wsrep_notify_cmd = disabled

Event History

Jun 11, 2026
CVE Published
via MITRE·05:13 PM
Data Sourced
via MITRE·05:13 PM
DescriptionSeverityWeakness
Data Sourced
via Red Hat·06:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
Jul 15, 2026
Data Sourced
via Ubuntu·01:29 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·01:34 PM
DescriptionAffected Software
Data Sourced
via Launchpad·01:34 PM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2026-49261?

The severity of CVE-2026-49261 is rated as critical with a score of 10.

2

How do I fix CVE-2026-49261?

To fix CVE-2026-49261, upgrade your MariaDB server to a version that is higher than 10.6.26, 10.11.17, 11.4.11, 11.8.7, or 12.3.1.

3

What is the impact of CVE-2026-49261?

CVE-2026-49261 allows for OS command injection due to unsafe parameter handling in the `wsrep_notify_cmd`.

4

Which versions of MariaDB are affected by CVE-2026-49261?

CVE-2026-49261 affects MariaDB 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.

5

Is CVE-2026-49261 currently patched?

Yes, CVE-2026-49261 has been patched in versions following the affected releases listed above.

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