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{"bugzilla": {"description": "mariadb: MariaDB Server: Arbitrary code execution via wsrep_notify_cmd", "id": "2487957", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487957"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-78", "details": ["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`.", "A flaw was found in MariaDB server. When the `wsrep_notify_cmd` feature is enabled, a remote attacker could exploit this vulnerability by embedding shell commands in the name of a joiner node. This could lead to arbitrary code execution on the server, allowing the attacker to take full control of the affected system."], "mitigation": {"lang": "en:us", "value": "If `wsrep_notify_cmd` is configured, unset it or remove the notification script. This variable is empty by default and is only present in Galera cluster deployments that have explicitly configured a notification command. Additionally, restrict network access to Galera replication ports (4567, 4568, 4444) to trusted cluster nodes only."}, "name": "CVE-2026-49261", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "mariadb10.11", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "mariadb11.8", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "mariadb", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mariadb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "mariadb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mariadb:10.11/mariadb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mariadb:11.8/mariadb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "mariadb10.11", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "mariadb11.8", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-06-11T17:13:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-49261\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-49261\nhttps://github.com/MariaDB/server/security/advisories/GHSA-3p3m-4x7c-p4pw\nhttps://jira.mariadb.org/browse/MDEV-39721"], "statement": "Red Hat has assessed this vulnerability as Important. Exploitation requires the `wsrep_notify_cmd` server variable to be explicitly set to a notification script by the administrator. This variable is empty by default in the upstream configuration, and Red Hat's shipped Galera configuration additionally defaults to `wsrep_on=0`. Additionally, the attacker must stand up a MariaDB/Galera node that is accepted into the cluster membership view in order to inject a malicious node name.", "threat_severity": "Important"}

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