CVE-2026-44171

HIGH
MEDIUM Priority: 0.01 BB Relevance: 41/100
Published: 2026-06-12 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
mariadb mariadb 10.6.1 – 10.6.26
mariadb mariadb 12.3.1

References & Advisories (2)

https://jira.mariadb.org/browse/MDEV-39408
Issue Tracking Third Party Advisory

Bug Bounty Relevance

41 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.19%
Raw Score 0.001880
Percentile 8.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00188
2026-10-28
0.00188

Intelligence Sources

nvd ref →