CVE-2026-48163
HighCVSS 8.0Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
A vulnerability in MariaDB allows a malicious joiner node to execute arbitrary shell commands on the donor node during the SST (Snapshot State Transfer) process using the rsync method. The issue is caused by insufficient validation of parameters sent by the joiner, which are interpolated into the command line on the donor side.
Risk Assessment
An attacker can take control of the donor node in a MariaDB cluster, compromising the confidentiality, integrity, and availability of data and potentially the entire database infrastructure.
Recommendation
Immediately upgrade MariaDB to versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, or 12.3.2 depending on your branch. If an upgrade is not possible, consider temporarily disabling the rsync SST method or restricting trust between nodes.
Original NVD description (English source)
MariaDB server is a community developed fork of MySQL server. From versions 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, during the SST the donor node is interpolating parameters that the joiner sent into the command line. Not all parameters were properly validated which could allow a malicious joiner to execute arbitrary shell commands on the donor side via the rsync SST method. This issue has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2.