CVE-2026-44173: MariaDB Server incorrect authorization for FILE privilege in subqueries

CVE-2026-44173 · Severity: medium · CVSS 5 · Published 2026-06-12

MariaDB is a widely used database server for storing and managing digital information. A security flaw allowed users with low-level access to write data to files on the server's storage without the required administrative permissions. While this could potentially be used to fill up disk space or interfere with system operations, existing security settings like 'secure-file-priv' may limit the impact.

Technologies: MariaDB Foundation MariaDB Server. Vendors: MariaDB Foundation.

Quick answers

Is CVE-2026-44173 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-44173 being exploited in the wild.
How severe is CVE-2026-44173?
Medium severity, with a CVSS score of 5, published 12 June 2026.
Which products and versions are affected?
MariaDB Foundation MariaDB Server 10.6.1 to 10.6.25, 10.11.1 to 10.11.16, 11.4.1 to 11.4.10, 11.8.1 to 11.8.6, 12.3.1.
Is there a fix for CVE-2026-44173?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-44173 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-44173?
Check whether you run MariaDB Foundation MariaDB Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An incorrect authorization vulnerability (CWE-863) exists in MariaDB Server's privilege system. The server fails to verify the FILE privilege when a user executes a SELECT ... INTO OUTFILE or SELECT ... INTO DUMPFILE statement, provided the FROM clause contains only subqueries (derived tables). This allows an authenticated user with low privileges to write data to the server's filesystem, potentially leading to a denial-of-service condition via disk exhaustion. The vulnerability is mitigated if the --secure-file-priv option is enabled or if operating system-level permissions restrict the database process's write access. Patches are available in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

Affected products

  • MariaDB MariaDB Server 10.6.1 to 10.6.25, 10.11.1 to 10.11.16, 11.4.1 to 11.4.10, 11.8.1 to 11.8.6, 12.3.1

Timeline

  • 2026-04-29: other: Issue reported in MariaDB Jira (MDEV-39493)
  • 2026-05-18: advisory: GitHub Security Advisory published
  • 2026-06-12: disclosed: CVE published to NVD

References

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