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CVE-2026-48165 MariaDB CVE debrief

A high-privileged MariaDB user could use wsrep_sst_receive_address or wsrep_sst_donor global system variables to execute shell commands as the uid of the mariadbd process on the galera joiner node. This issue affects MariaDB server versions from 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to before 11.8.8, and 12.3.1. The issue has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, 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 versions from 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to before 11.8.8, and 12.3.1 should apply the patches to prevent exploitation.

Technical summary

The vulnerability allows a high-privileged MariaDB user to execute shell commands as the uid of the mariadbd process on the galera joiner node using wsrep_sst_receive_address or wsrep_sst_donor global system variables.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches: Upgrade to MariaDB server versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, or 12.3.2.
  • Restrict access: Limit access to high-privileged MariaDB users.

Evidence notes

The CVE-2026-48165 record indicates a HIGH severity vulnerability with a CVSS score of 8.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48165 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48165

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

  • CVE-2026-48165 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48165

    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.