CVE-2026-55854
MariaDB Connector/Node.js: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials in mariadb
- State
- Published
- Severity
- 5.9 Medium
- Published
- Aug 28, 2026
- Updated
- Aug 31, 2026
- Reserved
- Jun 17, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
mariadb-connector-nodejsmariadb-corporation |
|
References
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-42r5-vhpq-m858
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/29733403cfe6519cdfe9c36c93765a468fbe285d
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/53b304264df84496d331dba2765c3634602f342e
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/9781de636841d34afdd08d81dd07d43edb82f85c
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/fbc159c2c8bd18c2db2d2e6587ab3020bbda64b6
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.2.4
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3
- https://jira.mariadb.org/browse/CONJS-353
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