{"id":"CVE-2026-55854","title":"MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases","summary":"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 authentica…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-319","CWE-522"],"vendor":"mariadb","product":"mariadb","affected":["mariadb < 3.2.4","mariadb >= 3.3.0, < 3.3.3","mariadb >= 3.4.0, < 3.4.6","mariadb >= 3.5.0, < 3.5.3"],"patched":["mariadb 3.2.4","mariadb 3.3.3","mariadb 3.4.6","mariadb 3.5.3"],"published":"2026-08-28","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:08:37.320","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55854","references":[{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3","label":"security-advisories@github.com"},{"url":"https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858","label":"security-advisories@github.com"},{"url":"https://jira.mariadb.org/browse/CONJS-353","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-42r5-vhpq-m858"}],"tags":["nvd","ghsa","npm"],"epss":0.00278,"epssPercentile":0.20459,"aliases":["GHSA-42r5-vhpq-m858"],"ecosystem":"npm","ingestedAt":"2026-08-28T22:26:19.160Z","slug":"CVE-2026-55854","body":"## Overview\n\nMariaDB 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55854)\n\nAffected packages:\n\n- `mariadb < 3.2.4`\n- `mariadb >= 3.3.0, < 3.3.3`\n- `mariadb >= 3.4.0, < 3.4.6`\n- `mariadb >= 3.5.0, < 3.5.3`\n\nPatched in:\n\n- `mariadb 3.2.4`\n- `mariadb 3.3.3`\n- `mariadb 3.4.6`\n- `mariadb 3.5.3`\n\nSource: https://github.com/advisories/GHSA-42r5-vhpq-m858","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}