MEDIUM 5.9 NVD
CVE-2026-55854
MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to 3.2.4, 3.3.3, 3.4.6, and 3.5.3, MariaDB
MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to 3.2.4, 3.3.3, 3.4.6, and 3.5.3, MariaDB Connector/Node.js can disclose an account password when PAM dialog authentication is negotiated over an insecure transport. In lib/cmd/handshake/auth/pam-password-auth.js and lib/cmd/handshake/authentication.js, the SendPamAuthPacketFactory behavior for the server-side plugin dialog lacked the secure-transport gate applied to mysql_clear_password. With the default sslMode=DISABLE and restrictedAuth=null settings, a hostile or on-path server can send an Authentication Switch Request for dialog over plain TCP, causing the connector to return the account password in cleartext. Properly verified TLS and a local Unix socket prevent this path, while fingerprint-only server identity validation is not sufficient. This issue is fixed in versions 3.2.4, 3.3.3, 3.4.6, and 3.5.3.
References
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d33
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4
This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-08-28 via NVD.
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