GHSA-3F6P-5WW8-9RCR MySQL2: Auth Plugin Downgrade to mysql_clear_password Leaks Plaintext Credentials

Summary A rogue MySQL server or MITM can force mysql2 to send credentials in plaintext by requesting an auth switch to mysqlclearpassword. The driver complies without verifying that TLS is active. Details mysqlclearpassword is registered as a default standard plugin in lib/commands/authswitch.js...

org.mariadb:r2dbc-mariadb vulnerable to cleartext password disclosure to a man-in-the-middle server (clear-text auth plugins not gated on a secure transport)

Summary The connector does not gate clear-text password authentication plugins on transport encryption. A hostile or man-in-the-middle MariaDB server can request a clear-text plugin over an unencrypted plain-TCP connection, and the driver responds with the user's password in cleartext on the wire...

MariaDB has cleartext password disclosure to a MITM on the initial-handshake

Summary When a Java application connects with sslMode=verify-full or verify-ca and a password but does not pin a server certificate, Connector/J deliberately accepts an untrusted/self-signed certificate at the TLS layer the "MITM-proof without a CA" feature and proves the server's identity...

GHSA-G9JJ-CGMH-9F38 MariaDB has cleartext password disclosure to a MITM on the initial-handshake

Summary When a Java application connects with sslMode=verify-full or verify-ca and a password but does not pin a server certificate, Connector/J deliberately accepts an untrusted/self-signed certificate at the TLS layer the "MITM-proof without a CA" feature and proves the server's identity...

CVE-2026-55856 MariaDB Connector/J: Cleartext password disclosure to a MITM on the initial-handshake

MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, when a Java application connects with sslMode=verify-full or sslMode=verify-ca, supplies a password, and does not configure serverSslCert or trustStore,...

CVE-2026-55215

MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to versions 3.3.3, 3.4.6, and 3.5.3, when ssl is enabled without a pinned CA or server certificate, MariaDB Connector/Node.js sends credentials before completing certificate...

CVE-2026-55215 MariaDB Connector/Node.js: Connector leaks the cleartext password to an MitM despite `ssl: true`

MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to versions 3.3.3, 3.4.6, and 3.5.3, when ssl is enabled without a pinned CA or server certificate, MariaDB Connector/Node.js sends credentials before completing certificate...