CVE-2026-44171 MEDIUM

CVE-2026-44171: MariaDB: path traversal in mbstream

Vendor Mariadb
Product server
Weakness CWE-22 · Path traversal
Published June 12, 2026
Last update June 12, 2026

CVSS base score

6.3/10
Attack vector Local
Attack complexity High
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 12, 2026 Record updated