MariaDB: path traversal in mbstream
CVE-2026-44171

6.3MEDIUM

Key Information:

Vendor

Mariadb

Status
Server
Vendor
CVE Published:
12 June 2026

What is CVE-2026-44171?

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, mbstream did not check for /../ in the path when unpacking the archive. A proper backup can never contain such paths, but a specially crafted archive could have caused mbstream to create files outside of the target-dir path. 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-39408
x_refsource_MISC

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.