CVE-2026-49261: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MariaDB server
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`.
AI Analysis
Technical Summary
CVE-2026-49261 is an OS command injection vulnerability (CWE-78) in MariaDB server related to the wsrep_notify_cmd feature. When enabled, this feature executes shell commands embedded in the name of the joiner node, allowing an attacker to execute arbitrary OS commands remotely without privileges or user interaction. The vulnerability affects multiple MariaDB server version ranges: 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. Fixed versions are 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. Disabling wsrep_notify_cmd is advised as a workaround if patching is not immediately possible.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary operating system commands with no privileges or user interaction required. This can lead to full compromise of the affected MariaDB server, including complete confidentiality, integrity, and availability loss. The CVSS v3.1 score is 10.0 (critical), reflecting the high impact of this vulnerability.
Mitigation Recommendations
A fix is available in MariaDB server versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. Users should upgrade to these versions to remediate the vulnerability. As a temporary workaround, disabling the wsrep_notify_cmd feature will prevent exploitation until an upgrade can be performed.
CVE-2026-49261: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MariaDB server
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`.
CVSS v3.1
Score 10.0critical
Affected software
pkg:deb/mariadb/serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49261 is an OS command injection vulnerability (CWE-78) in MariaDB server related to the wsrep_notify_cmd feature. When enabled, this feature executes shell commands embedded in the name of the joiner node, allowing an attacker to execute arbitrary OS commands remotely without privileges or user interaction. The vulnerability affects multiple MariaDB server version ranges: 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. Fixed versions are 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. Disabling wsrep_notify_cmd is advised as a workaround if patching is not immediately possible.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary operating system commands with no privileges or user interaction required. This can lead to full compromise of the affected MariaDB server, including complete confidentiality, integrity, and availability loss. The CVSS v3.1 score is 10.0 (critical), reflecting the high impact of this vulnerability.
Mitigation Recommendations
A fix is available in MariaDB server versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. Users should upgrade to these versions to remediate the vulnerability. As a temporary workaround, disabling the wsrep_notify_cmd feature will prevent exploitation until an upgrade can be performed.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-28T14:33:01.179Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2af7a8815e7002b817239c
Added to database: 6/11/2026, 6:00:08 PM
Last enriched: 6/11/2026, 6:15:02 PM
Last updated: 6/11/2026, 7:29:15 PM
Views: 13
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