Description
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB's ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal's database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MariaDB | server | >= 10.6.1, < 10.6.28, >= 10.11.1, < 10.11.19, >= 11.4.1, < 11.4.13, >= 11.8.1, < 11.8.9, >= 12.3.1, < 12.3.3, >= 13.0.1, < 13.0.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mariadb | 1:11.8.9+ds-1 | — |
| Debian 13 | mariadb | No fix yet | — |
| Debian 12 | mariadb | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mariadb | No fix yet | — |
| Ubuntu 26.04 LTS | mariadb | No fix yet | — |
| Ubuntu 24.04 LTS | mariadb | No fix yet | — |
| Ubuntu 22.04 LTS | mariadb-10.6 | No fix yet | — |
| Ubuntu 20.04 LTS | mariadb-10.3 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mariadb-10.1 | No fix yet | — |
| Ubuntu 16.04 LTS | mariadb-10.0 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | mariadb10.11 +19 | 10.11.18-4.1.hum1 | RHSA-2026:83108 |
| Red Hat Hardened Images 1 | mariadb11.8 +20 | 3:11.8.9-0.1.hum1 | RHSA-2026:84689 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mariadb | 12.3.2-3.1 | openSUSE-SU-2026:12245-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | mariadb1011 +15 | 3:10.11.19-1.amzn2023.0.1 | ALAS2023-2026-3308 |
| Amazon Linux 2023 | mariadb114 +15 | 3:11.4.13-1.amzn2023.0.1 | ALAS2023-2026-3309 |
| Amazon Linux 2023 | mariadb118 +15 | 3:11.8.9-1.amzn2023.0.1 | ALAS2023-2026-3310 |
| Amazon Linux 2023 | mariadb123 +15 | 3:12.3.3-2.amzn2023.0.1 | ALAS2023-2026-3311 |
Advisories 8
- RHSA-2026:84689 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALAS2023-2026-3311 Important: mariadb123 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 11, 2026
- ALAS2023-2026-3308 Important: mariadb1011 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 11, 2026
- ALAS2023-2026-3309 Important: mariadb114 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 11, 2026
- ALAS2023-2026-3310 Important: mariadb118 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 11, 2026
- WID-SEC-2026-3856 MariaDB: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- openSUSE-SU-2026:12245-1 libmariadbd-devel-12.3.2-3.1 on GA media SUSE / openSUSE Security Updates · Oct 24, 2026
- RHSA-2026:83108 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
References
- https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf
- https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b
- https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
- https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
- 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://jira.mariadb.org/browse/MDEV-40541