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 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 are vulnerable to OS command injection (CWE-78). This occurs because shell commands embedded in the name of the joiner node are executed, leading to arbitrary code execution. The issue is resolved in MariaDB versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. The vendor advisory from Red Hat confirms the availability of security updates addressing this vulnerability. The CVSS v3.1 score is 10.0 (critical), reflecting network attack vector, no privileges required, no user interaction, and complete confidentiality, integrity, and availability impact.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary shell commands on the MariaDB server if wsrep_notify_cmd is enabled, resulting in full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
A fix is available in MariaDB 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 option will mitigate the risk. Refer to the Red Hat advisories for detailed update instructions.
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 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 are vulnerable to OS command injection (CWE-78). This occurs because shell commands embedded in the name of the joiner node are executed, leading to arbitrary code execution. The issue is resolved in MariaDB versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2. The vendor advisory from Red Hat confirms the availability of security updates addressing this vulnerability. The CVSS v3.1 score is 10.0 (critical), reflecting network attack vector, no privileges required, no user interaction, and complete confidentiality, integrity, and availability impact.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary shell commands on the MariaDB server if wsrep_notify_cmd is enabled, resulting in full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
A fix is available in MariaDB 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 option will mitigate the risk. Refer to the Red Hat advisories for detailed update instructions.
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: 07/08/2026, 13:00:47 UTC
Last updated: 07/15/2026, 04:20:13 UTC
Views: 168
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