CVE-2026-44173
Description
A flaw was found in MariaDB server. This vulnerability allows a low-privileged authenticated user to bypass a security control that normally restricts file operations. Specifically, the system failed to verify the necessary 'FILE' privilege when certain 'SELECT' statements, which write data to files, were executed with subqueries in their 'FROM' clause. This could enable an attacker to write unauthorized files to the server's file system, potentially leading to the disclosure of sensitive information or a denial of service by corrupting or filling disk space.
Statement
This is an Important flaw in MariaDB server that allows a low-privileged authenticated database user to bypass the 'FILE' privilege check. By crafting specific SELECT ... INTO OUTFILE or SELECT ... INTO DUMPFILE statements with subqueries, an attacker can write arbitrary files to the server's file system. This could lead to data corruption, information disclosure, or a denial of service on affected Red Hat products where MariaDB is deployed.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.1 | 5.3 | 8.1 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | None | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | None |
| Integrity Impact | High | Low | High |
| Availability Impact | High | None | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Understanding the Weakness (CWE)
Access Control
Technical Impact: Gain Privileges or Assume Identity
A user can access restricted functionality and/or sensitive information that may include administrative functionality and user accounts.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
