medium CVSS 5 EPSS 0.40%

CVE-2026-44173·MariaDB vulnerability

MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, MariaDB allowed SELECT ... INTO OUTFILE and SELECT ... INTO DUMPFILE without verifying the FILE privilege if the FROM clause contained only subqueries. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

Severity
medium
Software
MariaDB
Fixed in
11.8.7
Published

How likely is exploitation

FIRST's Exploit Prediction Scoring System puts the probability of this CVE being exploited in the next 30 days at 0.40% — higher than 32% of all published CVEs. EPSS is an independent forecast of exploitation, not a severity rating: it says nothing about how much damage a successful attack does, which is what a CVSS score measures.

Affected versions

From: 11.8.1

Until: 11.8.7

Fixed in: 11.8.7

How to fix this CVE

Update MariaDB to version 11.8.7 or later to patch a privilege bypass vulnerability affecting the SELECT ... INTO OUTFILE and SELECT ... INTO DUMPFILE operations. This vulnerability allowed users to write files to disk without the required FILE privilege when using subqueries, potentially leading to unauthorized data exfiltration or system compromise. Immediately apply the security patch to all affected MariaDB instances.

sudo dnf update mariadb-server

Defensia detects this vulnerability

How to check if you are affected

  1. Step 1: Check your installed MariaDB version by running: mysql --version or mariadb --version
  2. Step 2: Connect to MariaDB and verify version: SELECT VERSION(); — versions 11.8.1 through 11.8.6 are vulnerable
  3. Step 3: Search MariaDB error logs for SELECT ... INTO OUTFILE and SELECT ... INTO DUMPFILE queries from users without FILE privilege: grep -i 'INTO OUTFILE\|INTO DUMPFILE' /var/log/mysql/error.log
  4. Step 4: After patching, confirm the update with SELECT VERSION(); and verify the patch version is 11.8.7 or later

FAQ

What is CVE-2026-44173?

This is a privilege escalation vulnerability in MariaDB where users could bypass FILE privilege restrictions by crafting SELECT statements that write to disk using subqueries in the FROM clause, enabling unauthorized file operations.

Is CVE-2026-44173 being actively exploited?

No, this vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploit code is available.

What versions of MariaDB are affected by CVE-2026-44173?

Multiple release branches are impacted: 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, and 12.3.1. For the 11.8 branch specifically, versions 11.8.1 through 11.8.6 are vulnerable.

How do I check if my server is vulnerable to CVE-2026-44173?

Connect to MariaDB and run: SELECT VERSION(); If the version is between 11.8.1 and 11.8.6, your server is vulnerable and requires immediate patching to 11.8.7 or later.

Does Defensia detect CVE-2026-44173?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If MariaDB is installed on a monitored server, CVE-2026-44173 will appear in your dashboard with remediation steps.

Related MariaDB CVEs

CVE-2026-49261CVSS 10MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through 10.11.17, 11.4.1 through 11.4.11, 11.8.1 through 11.8.7, and 12.3.1 with `wsrep_notify_cmd` enabled would execute shell commands embedded in the name of the joiner node. This is fixed in 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. As a workaround, anyone who cannot upgrade now should disable `wsrep_notify_cmd`.
CVE-2026-85748CVSS 9.9MariaDB server is a community developed fork of MySQL server. From 12.3.1 until 12.3.3 and 13.0.2, SYS_REFCURSOR handling is affected because cursor-array reallocation can leave stale references in routine contexts. A low-privileged attacker can open a large number of SYS_REFCURSORs and then fetch one to trigger a use-after-free that can enable remote code execution when combined with another vulnerability. This issue is fixed in versions 12.3.3 and 13.0.2.
CVE-2026-85746CVSS 9.9MariaDB 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, ST_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. 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.
CVE-2026-92262CVSS 9.9MariaDB 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 #mysql50# bypass prefix is affected because it allows the #mysql50# prefix to bypass normal table-name filesystem encoding. An attacker can trigger the issue with a table name using the #mysql50# prefix, then use a #mysql50# table name to access files under their legacy unencoded name and cause crashes, data corruption, data exfiltration, or remote code execution. 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.
CVE-2026-44170CVSS 9.8MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, MariaDB on WIndows with installed CONNECT engine and enabled REST support interpolated table HTTP attribute into the curl command line without proper sanitizing. This allows the user to execute shell commands on the server. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

References

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