MariaDB: wsrep SST unsafe parameter handling on the donor side

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Summary

CVECVE-2026-44168
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-12 18:16:33 UTC
Updated2026-06-12 18:16:33 UTC
DescriptionMariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, during the SST the donor node is interpolating parameters that the joiner sent into the command line. Not all parameters were properly validated which could allow a malicious joiner to execute arbitrary shell commands on the donor side via the mariabackup SST method. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from [email protected]

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

EPSS: 0.000530000 probability, percentile 0.172300000 (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]Secondary8HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED8HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA MariaDB Server affected >= 10.6.1, < 10.6.26 Not specified
CNA MariaDB Server affected >= 10.11.1, < 10.11.17 Not specified
CNA MariaDB Server affected >= 11.4.1, < 11.4.11 Not specified
CNA MariaDB Server affected >= 11.8.1, < 11.8.7 Not specified
CNA MariaDB Server affected >= 12.3.1, < 12.3.2 Not specified

References

ReferenceSourceLinkTags
jira.mariadb.org/browse/MDEV-39413 [email protected] jira.mariadb.org
github.com/MariaDB/server/security/advisories/GHSA-vwf7-w26c-9w5h [email protected] github.com
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