Path traversal in MariaDB - CVE-2026-44171
Published: May 19, 2026
Vulnerability identifier: #VU131786
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-44171
CWE-ID: CWE-22
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Debian
Affected software:
MariaDB
MariaDB
Detailed vulnerability description
The vulnerability allows a local privileged user to create files outside of the target directory.
The vulnerability exists due to path traversal in mbstream when unpacking a specially crafted archive. A local privileged user can supply a crafted archive containing /../ path elements to create files outside of the target directory.
User interaction is required to unpack the crafted archive.
How to mitigate CVE-2026-44171
Install security update from vendor's website.