CVE-2026-107822
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.
Does this matter?
Lower severity and a low EPSS score (0.52%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.52% probability · 44th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-706, CWE-863
- Affected
- mariadb/mariadb
- Source
- security-advisories@github.com
EPSS moved from 0.3% on 10 October 2026 to 0.5% on 26 October 2026.
References
- https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064bPatch
- https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19Release Notes
- https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28Release Notes
- https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13Release Notes
- https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9Release Notes
- https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3Release Notes
- https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2Release Notes
- https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rfVendor Advisory
- https://jira.mariadb.org/browse/MDEV-40541Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.