{"id":"BIT-mysql-client-2026-55854","summary":"MariaDB Connector/Node.js: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials in mariadb","details":"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.","aliases":["BIT-mariadb-2026-55854","BIT-mariadb-min-2026-55854","CVE-2026-55854","GHSA-42r5-vhpq-m858"],"modified":"2026-09-02T16:30:11.934751629Z","published":"2026-09-02T14:49:34.036Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:node.js:*:*"]},"references":[{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3"},{"type":"WEB","url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858"},{"type":"WEB","url":"https://jira.mariadb.org/browse/CONJS-353"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55854"}],"affected":[{"package":{"name":"mysql-client","ecosystem":"Bitnami","purl":"pkg:bitnami/mysql-client"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.2.4"},{"introduced":"3.3.0"},{"fixed":"3.3.3"},{"introduced":"3.4.0"},{"fixed":"3.4.6"},{"introduced":"3.5.0"},{"fixed":"3.5.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mysql-client/BIT-mysql-client-2026-55854.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}],"schema_version":"1.9.0"}