CVE-2026-102523

high

Description

MariaDB server is a community developed fork of MySQL server. From 10.11.1 until 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ALTER TABLE ... CONVERT ... PARTITION does not apply filename encoding to user-specified partition names before using them in filesystem path construction. An authenticated database user can use a partition name requiring filename escaping to make the conversion operate on table files the user is not authorized to access, allowing unauthorized table reads or modifications. This issue is fixed in versions 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

References

https://jira.mariadb.org/browse/MDEV-40413

https://github.com/MariaDB/server/security/advisories/GHSA-h4vr-wpff-jfx4

https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2

https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3

https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9

https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13

https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19

https://github.com/MariaDB/server/commit/98437c30ae52ed709f266e5f8095d779261a5879

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117548

Details

Source: Mitre, NVD

Published: 2026-11-05

Updated: 2026-11-06

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8

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

Severity: High

EPSS

EPSS: 0.00562