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CVE-2026-49261— MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`

Quick assessment

Affected
MariaDB server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MariaDB Server是MariaDB开源的一个关系型数据库系统。 MariaDB server 10.6.1至10.6.26版本、10.11.1至10.11.17版本、11.4.1至11.4.11版本、11.8.1至11.8.7版本和12.3.1版本存在操作系统命令注入漏洞，该漏洞源于wsrep_notify_cmd启用时执行嵌入在加入节点名称中的shell命令。

CVSS 10.0 · Critical EPSS 1.69% · P76

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 5

VendorProduct Version RangeStatus
MariaDB server >= 10.6.1, < 10.6.27 affected
>= 10.11.1, < 10.11.18 affected
>= 11.4.1, < 11.4.12 affected
>= 11.8.1, < 11.8.8 affected
= 12.3.1 affected
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I. Basic Information for CVE-2026-49261

Vulnerability Information
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Vulnerability Title
MariaDB server has unsafe parameter handling in `wsrep_notify_cmd`
Source: CVE Program / CVE List V5
Vulnerability 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`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
MariaDB Server 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MariaDB Server是MariaDB开源的一个关系型数据库系统。 MariaDB server 10.6.1至10.6.26版本、10.11.1至10.11.17版本、11.4.1至11.4.11版本、11.8.1至11.8.7版本和12.3.1版本存在操作系统命令注入漏洞，该漏洞源于wsrep_notify_cmd启用时执行嵌入在加入节点名称中的shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MariaDB server >= 10.6.1, < 10.6.27 -

II. Public POCs for CVE-2026-49261

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III. Intelligence Information for CVE-2026-49261

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Patches & Fixes for CVE-2026-49261 (1)

Vendor Advisories for CVE-2026-49261 (1)

IV. Related Vulnerabilities

Same product: server
Same vendor: MariaDB
Same weakness: CWE-78

V. Comments for CVE-2026-49261

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