Description
MariaDB 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`.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-49261 ↗
- github.com/MariaDB/server/security/advisories/GHSA-3p3m-4x7c-p4pw ↗
- jira.mariadb.org/browse/MDEV-39721 ↗
- access.redhat.com/errata/RHSA-2026:25143 ↗
- access.redhat.com/errata/RHSA-2026:25145 ↗
- access.redhat.com/errata/RHSA-2026:33093 ↗
- access.redhat.com/errata/RHSA-2026:33412 ↗
- access.redhat.com/errata/RHSA-2026:33464 ↗
- access.redhat.com/errata/RHSA-2026:33481 ↗
- access.redhat.com/errata/RHSA-2026:33482 ↗
- access.redhat.com/errata/RHSA-2026:49522 ↗
- access.redhat.com/errata/RHSA-2026:52848 ↗
- access.redhat.com/errata/RHSA-2026:54142 ↗
- access.redhat.com/security/cve/CVE-2026-49261 ↗
- bugzilla.redhat.com/show_bug.cgi ↗
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49261.json ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.