Vulnary
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Critical· 10official fix available

CVE-2026-49261

MariaDB servers from versions 10.6.1 to 12.3.1 with wsrep_notify_cmd enabled can run arbitrary shell commands when a node joins a cluster. This allows an attacker to execute commands with the privileges of the MariaDB process. The vulnerability is critical because it requires no authentication and can compromise the entire system.

publishedJun 11, 2026
last modifiedAug 3, 2026
sourcesNVD
severity · cvss
10
critical · how bad it is
exploitation · epss
1%
70th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 2, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

MariaDB community server versions 10.6.1–10.6.26, 10.11.1–10.11.17, 11.4.1–11.4.11, 11.8.1–11.8.7, and 12.3.1 when wsrep_notify_cmd is enabled.

02

Real-world impact

An attacker could run any shell command on the host, potentially taking full control of the server.

03

Why this severity

The CVSS score of 10 reflects that the flaw allows remote attackers to execute arbitrary code without authentication, with complete control over confidentiality, integrity, and availability.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade MariaDB to a fixed version (10.6.27, 10.11.18, 11.4.12, 11.8.8, or 12.3.2 or later).

NVD-referenced vendor advisory

05

Timeline

  1. Jun 11, 2026 · Jun 11, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Aug 3, 2026 · 14h ago
    Advisory updated
    The NVD record was last revised.
  3. Aug 3, 2026 · 13h ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeChanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →