MariaDB Server <=13.0.2 GRANT PROXY empty password auth bypass
CVE-2026-97380 Published on October 16, 2026

MariaDB: GRANT PROXY with empty password incorrectly checks grantor's privileges
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, the GRANT PROXY statement treats an IDENTIFIED clause with an empty password as though authentication were not specified, causing it to check the wrong grantor privileges. A low-privileged attacker who can name another account can exploit this authorization error to set that account's password. 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.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-97380 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Types

Unverified Password Change

When setting a new password for a user, the product does not require knowledge of the original password, or using another form of authentication. This could be used by an attacker to change passwords for another user, thus gaining the privileges associated with that user.

What is an AuthZ Vulnerability?

The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

CVE-2026-97380 has been classified to as an AuthZ vulnerability or weakness.


Affected Versions

MariaDB server: