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CVE-2026-44168 MariaDB CVE debrief

CVE-2026-44168 is a high-severity vulnerability in MariaDB server, allowing a malicious joiner to execute arbitrary shell commands on the donor side via the mariabackup SST method. The vulnerability affects MariaDB server versions from 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. The issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

Vendor
MariaDB
Product
server
CVSS
HIGH 8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-08-03
Advisory published
2026-06-12
Advisory updated
2026-08-03

Who should care

Users of MariaDB server, particularly those using versions from 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, should apply the patches to prevent potential command injection attacks.

Technical summary

The vulnerability occurs during the SST (Semi-Synchronous Replication) process, where the donor node interpolates parameters sent by the joiner into the command line. Insufficient validation of these parameters allows a malicious joiner to execute arbitrary shell commands on the donor side.

Defensive priority

High

Recommended defensive actions

  • Apply patches: Upgrade to MariaDB server versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, or 12.3.2, or later.
  • Restrict access: Limit access to the MariaDB server to trusted users and networks.
  • Monitor for suspicious activity: Regularly monitor the MariaDB server for signs of unauthorized access or malicious activity.

Evidence notes

The CVE-2026-44168 vulnerability has been confirmed by the MariaDB server community and has been assigned a CVSS score of 8 (High).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-44168 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-44168

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-44168 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-44168

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.