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
MariaDB server versions 10.6.1 to 10.6.26, 10.11.1 to 10.11.17, 11.4.1 to 11.4.11, 11.8.1 to 11.8.7, and 12.3.1 with the wsrep_notify_cmd feature enabled are vulnerable to an OS command injection (CWE-78). This vulnerability allows arbitrary shell commands to be executed via specially crafted joiner node names. The issue has been fixed in subsequent patch releases 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. The vulnerability has a CVSS 3.1 score of 10.0, indicating critical severity with network attack vector, no privileges or user interaction required, and complete confidentiality, integrity, and availability impact. Red Hat advisories confirm the availability of updated packages addressing this issue. Users unable to upgrade immediately should disable wsrep_notify_cmd as a temporary mitigation.
Potential Impact
Successful exploitation of this vulnerability allows unauthenticated remote attackers to execute arbitrary OS commands on the affected MariaDB server, resulting in full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the system with critical severity (CVSS 10.0).
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 or later versions to remediate the vulnerability. For those unable to upgrade immediately, disabling the wsrep_notify_cmd feature is recommended as a temporary workaround. Refer to vendor advisories such as Red Hat's for detailed update instructions and package availability.
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
MariaDB server versions 10.6.1 to 10.6.26, 10.11.1 to 10.11.17, 11.4.1 to 11.4.11, 11.8.1 to 11.8.7, and 12.3.1 with the wsrep_notify_cmd feature enabled are vulnerable to an OS command injection (CWE-78). This vulnerability allows arbitrary shell commands to be executed via specially crafted joiner node names. The issue has been fixed in subsequent patch releases 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. The vulnerability has a CVSS 3.1 score of 10.0, indicating critical severity with network attack vector, no privileges or user interaction required, and complete confidentiality, integrity, and availability impact. Red Hat advisories confirm the availability of updated packages addressing this issue. Users unable to upgrade immediately should disable wsrep_notify_cmd as a temporary mitigation.
Potential Impact
Successful exploitation of this vulnerability allows unauthenticated remote attackers to execute arbitrary OS commands on the affected MariaDB server, resulting in full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the system with critical severity (CVSS 10.0).
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 or later versions to remediate the vulnerability. For those unable to upgrade immediately, disabling the wsrep_notify_cmd feature is recommended as a temporary workaround. Refer to vendor advisories such as Red Hat's for detailed update instructions and package availability.
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
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-49261","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:33093","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:25145","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:25143","vendor":"Red Hat"}]
Threat ID: 6a2af7a8815e7002b817239c
Added to database: 06/11/2026, 18:00:08 UTC
Last enriched: 07/16/2026, 09:05:06 UTC
Last updated: 07/25/2026, 13:19:22 UTC
Views: 183
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