CVE-2026-49261
MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`
- State
- Published
- Severity
- 10.0 Critical
- Published
- Jun 11, 2026
- Updated
- Aug 12, 2026
- Reserved
- May 28, 2026
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`.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 10.0 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | GitHub_M |
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
serverMariaDB |
|
References
- https://github.com/MariaDB/server/security/advisories/GHSA-3p3m-4x7c-p4pw
- https://jira.mariadb.org/browse/MDEV-39721
- https://access.redhat.com/security/cve/CVE-2026-49261vdb-entry
- RHBZ#2487957issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49261.json
- https://access.redhat.com/errata/RHSA-2026:49522vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:33093vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:33412vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:33464vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:52848vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:54142vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:33482vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:33481vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:25145vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:25143vendor-advisory
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