MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`

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Summary

CVECVE-2026-49261
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-11 18:16:26 UTC
Updated2026-06-11 20:56:29 UTC
DescriptionMariaDB 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`.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.000480000 probability, percentile 0.153770000 (date 2026-06-13)

Problem Types: CWE-78 | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA MariaDB Server affected >= 10.6.1, < 10.6.27 Not specified
CNA MariaDB Server affected >= 10.11.1, < 10.11.18 Not specified
CNA MariaDB Server affected >= 11.4.1, < 11.4.12 Not specified
CNA MariaDB Server affected >= 11.8.1, < 11.8.8 Not specified
CNA MariaDB Server affected = 12.3.1 Not specified

References

ReferenceSourceLinkTags
jira.mariadb.org/browse/MDEV-39721 [email protected] jira.mariadb.org
github.com/MariaDB/server/security/advisories/GHSA-3p3m-4x7c-p4pw [email protected] github.com
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