CVE-2026-97380
Received Received - Intake

Authorization Bypass via GRANT PROXY in MariaDB

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: GitHub, Inc.

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, 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.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-97380
EUVD
EUVD-2026-102924

Affected Vendors & Products

Showing 6 associated CPEs
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
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KEV
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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-620 When setting a new password for a user, the product does not require knowledge of the original password, or using another form of authentication.

Attack-Flow Graph

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Executive Summary

This vulnerability in MariaDB involves an incorrect privilege check in the GRANT PROXY statement when an empty password is specified. The system treats an empty password as if authentication was not specified, leading to wrong privilege checks. This allows a low-privileged attacker to set passwords for other accounts without proper authorization.

Detection Guidance

Check MariaDB server version with 'mysql --version' or 'SELECT VERSION();'. If running affected versions (10.6.1-10.6.27, 10.11.1-10.11.18, 11.4.1-11.4.12, 11.8.1-11.8.8, 12.3.1-12.3.2, 13.0.1), the system is vulnerable. Review GRANT PROXY statements for empty password clauses in IDENTIFIED clauses.

Impact Analysis

An attacker could exploit this to change passwords of other user accounts, potentially gaining unauthorized access to sensitive data or escalating privileges. This could lead to data breaches, loss of confidentiality, integrity, and availability of the database.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and access controls. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Upgrade MariaDB to patched versions (10.6.28+, 10.11.19+, 11.4.13+, 11.8.9+, 12.3.3+, 13.0.2+). As a temporary workaround, use random and non-guessable usernames to prevent attackers from targeting specific accounts.

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