CVE-2026-48163
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.91% probability · 58th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- mariadb/mariadb
- Source
- security-advisories@github.com
References
- https://github.com/MariaDB/server/security/advisories/GHSA-rpgv-q6gv-684rVendor Advisory
- https://jira.mariadb.org/browse/MDEV-39648Issue Tracking, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:25143
- https://access.redhat.com/errata/RHSA-2026:25145
- https://access.redhat.com/errata/RHSA-2026:33093
- https://access.redhat.com/errata/RHSA-2026:33412
- https://access.redhat.com/errata/RHSA-2026:33464
- https://access.redhat.com/errata/RHSA-2026:33481
- https://access.redhat.com/errata/RHSA-2026:33482
- https://access.redhat.com/errata/RHSA-2026:49522
- https://access.redhat.com/security/cve/CVE-2026-48163
- https://bugzilla.redhat.com/show_bug.cgi?id=2488454
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48163.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.