Medium severity · published Oct 9, 2026
CVE-2026-107822
MariaDB: database privilege escalation via user / role name collision in the acl cache
6.4
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
>= 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 · source: vendor
MA
Mariadb · Mariadb
10.6.1 before 10.6.28; 10.11.1 before 10.11.19; 11.4.1 before 11.4.13; 11.8.1 before 11.8.9; 12.3.1 before 12.3.3; 13.0.1 before 13.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107822
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107822
x_refsource_CONFIRM
https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf
x_refsource_MISC
https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
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