CVE-2026-107822
Received
Received - Intake
Privilege Escalation via ACL Cache Collision in MariaDB
Vulnerability report for CVE-2026-107822, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-09
Last updated on: 2026-10-09
Assigner: GitHub, Inc.
Description
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 Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| MariaDB | server | >= 10.6.1, < 10.6.28 |
| MariaDB | server | >= 10.11.1, < 10.11.19 |
| MariaDB | server | >= 11.4.1, < 11.4.13 |
| MariaDB | server | >= 11.8.1, < 11.8.9 |
| MariaDB | server | >= 12.3.1, < 12.3.3 |
| MariaDB | server | >= 13.0.1, < 13.0.2 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
| CWE-706 | The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere. |
