MariaDB: wsrep SST unsafe parameter handling on the donor side
CVE-2026-44168

8HIGH

Key Information:

Vendor

Mariadb

Status
Server
Vendor
CVE Published:
12 June 2026

What is CVE-2026-44168?

MariaDB 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.

Affected Version(s)

server >= 10.6.1, < 10.6.26 < 10.6.1, 10.6.26

server >= 10.11.1, < 10.11.17 < 10.11.1, 10.11.17

server >= 11.4.1, < 11.4.11 < 11.4.1, 11.4.11

References

https://github.com/MariaDB/server/security/advisories/GHS...
x_refsource_CONFIRM
https://jira.mariadb.org/browse/MDEV-39413
x_refsource_MISC

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.