CVE-2026-55854mediumCWE-319CWE-522

CVE-2026-55854: medium-severity vulnerability in mariadb-corporation mariadb-connector-nodejs

MariaDB Connector/Node.js: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials in mariadb

Published · Updated

Follow this CVE+ Monitor mariadb-connector-nodejs+ Monitor mariadb

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.9epss 0.4%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
mariadb-corporation · mariadb-connector-nodejs
Related CVEs — mariadb-corporation mariadb-connector-nodejs

In the same product, most dangerous first.

CVE-2026-55855MEDIUMMariaDB Connector/Node.js: Possible SQL injection in Buffer parameter escaping under big5/gbk/sjis/cp932/gb18030 client charsetsEPSS 0.7%CVE-2026-55215HIGHMariaDB Connector/Node.js: Connector leaks the cleartext password to an MitM despite `ssl: true`EPSS 0.6%CVE-2026-107384HIGHMariaDB Connector/Node.js: SQL injection through object keys in SET expansion (permitSetMultiParamEntries)EPSS 0.4%CVE-2026-107385HIGHMariaDB Connector/Node.js: SQL injection in the text protocol when the session uses NO_BACKSLASH_ESCAPESEPSS 0.4%CVE-2026-107383HIGHMariaDB Connector/Node.js exposes uninitialized process memory through malformed GeoJSON parametersEPSS 0.4%CVE-2026-107382MEDIUMMariaDB Connector/Node.js: Uncaught exception crashes the client during ed25519 authentication with zero-configuration TLSEPSS 0.2%