Vulnerability in Mariadb Server
CVE-2026-102523
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Mariadb Server — versions >= 10.11.1, < 10.11.19, >= 11.4.1, < 11.4.13, >= 11.8.1, < 11.8.9
Weakness classification (CWE)
References
- https://github.com/MariaDB/server/commit/98437c30ae52ed709f266e5f8095d779261a5879
- https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
- https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
- https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
- https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
- https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2
- https://github.com/MariaDB/server/security/advisories/GHSA-h4vr-wpff-jfx4
- https://jira.mariadb.org/browse/MDEV-40413
Frequently asked questions
- What is CVE-2026-102523?
- CVE-2026-102523 is a high-severity vulnerability in Mariadb Server, classified under External Control of File Name or Path. CVSS score: 8.0/10. Published 2026-11-05.
- How severe is CVE-2026-102523?
- High severity. CVSS v3 base score is 8.0 out of 10.