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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
MariaDB server affected
Version Status Constraints
>= 10.6.1, < 10.6.28 affected —
>= 10.11.1, < 10.11.19 affected —
>= 11.4.1, < 11.4.13 affected —
>= 11.8.1, < 11.8.9 affected —
>= 12.3.1, < 12.3.3 affected —
>= 13.0.1, < 13.0.2 affected —

No data.

No data.

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Vendors Products
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Server Subscribe

Project Subscriptions

Vendors Products
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Server Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b cve-icon cve-icon
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19 cve-icon cve-icon
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28 cve-icon cve-icon
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13 cve-icon cve-icon
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9 cve-icon cve-icon
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 cve-icon cve-icon
https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 cve-icon cve-icon
https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf cve-icon cve-icon
https://jira.mariadb.org/browse/MDEV-40541 cve-icon cve-icon
History

Fri, 09 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Mariadb
Mariadb server
Vendors & Products Mariadb
Mariadb server

Fri, 09 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title MariaDB: database privilege escalation via user / role name collision in the acl cache
Weaknesses CWE-706
CWE-863
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-09T17:28:47.578Z

Reserved: 2026-10-08T21:23:59.823Z

Link: CVE-2026-107822

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-09T18:17:04.030

Modified: 2026-10-09T18:17:04.030

Link: CVE-2026-107822

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T18:30:11Z

Weaknesses