Critical severity · published Jun 11, 2026
CVE-2026-49261
MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`
9.8
CVSS
1.6%
EPSS
No
On KEV
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`.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
>= 10.6.1, < 10.6.27; >= 10.11.1, < 10.11.18; >= 11.4.1, < 11.4.12; >= 11.8.1, < 11.8.8; = 12.3.1 · source: vendor
MA
Mariadb · Mariadb
10.6.1 before 10.6.27; 10.11.1 before 10.11.18; 11.4.1 before 11.4.12; 11.8.1 before 11.8.8; 12.3.1 · source: NVD
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Hardened Images · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49261
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49261
Vendor Advisory
https://github.com/MariaDB/server/security/advisories/GHSA-3p3m-4x7c-p4pw
Issue Tracking
https://jira.mariadb.org/browse/MDEV-39721
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:25143
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:25145
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:33093
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:33412
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