RCE in Mariadb
CVE-2026-49261
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`.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.016 · change: -0.001
Affected products
- Mariadb — versions 12.3.1
- Mariadb Server — versions >= 10.6.1, < 10.6.27, >= 10.11.1, < 10.11.18, >= 11.4.1, < 11.4.12
Weakness classification (CWE)
References
- https://github.com/MariaDB/server/security/advisories/GHSA-3p3m-4x7c-p4pw (Vendor Advisory)
- https://jira.mariadb.org/browse/MDEV-39721 (Issue Tracking)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-49261?
- CVE-2026-49261 is a critical-severity vulnerability in Mariadb, classified under OS Command Injection. CVSS score: 10.0/10. Published 2026-06-11.
- How severe is CVE-2026-49261?
- Critical severity. CVSS v3 base score is 10.0 out of 10.