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, PAM dialog authentication can be coerced into transmitting the account password over an insecure connection. The mysql_clear_password plugin is gated behind a secure transport, but the sibling PAM handler SendPamAuthPacketFactory, named dialog by the server, does not declare that requirement and inherits the default secure-required value false; older branches implement the same affected behavior in SendPamAuthPacket. A hostile or man-in-the-middle server can send an Authentication Switch Request for dialog over plain TCP, causing the driver to return the user's password in cleartext when sslMode=DISABLE and restrictedAuth=null, which is the default configuration. Properly verified TLS and local Unix sockets are not exposed to this transport vector. This issue is fixed in versions 2.7.14, 3.3.5, 3.4.3, and 3.5.9.
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Thu, 03 Sep 2026 12:15:00 +0000
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threat_severity
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threat_severity
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Mon, 31 Aug 2026 21:45:00 +0000
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Mariadb
Mariadb connector-j |
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Mariadb
Mariadb connector-j |
Mon, 31 Aug 2026 19:30:00 +0000
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ssvc
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Fri, 28 Aug 2026 23:00:00 +0000
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| Description | 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, PAM dialog authentication can be coerced into transmitting the account password over an insecure connection. The mysql_clear_password plugin is gated behind a secure transport, but the sibling PAM handler SendPamAuthPacketFactory, named dialog by the server, does not declare that requirement and inherits the default secure-required value false; older branches implement the same affected behavior in SendPamAuthPacket. A hostile or man-in-the-middle server can send an Authentication Switch Request for dialog over plain TCP, causing the driver to return the user's password in cleartext when sslMode=DISABLE and restrictedAuth=null, which is the default configuration. Properly verified TLS and local Unix sockets are not exposed to this transport vector. This issue is fixed in versions 2.7.14, 3.3.5, 3.4.3, and 3.5.9. | |
| Title | MariaDB Connector/J: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials | |
| Weaknesses | CWE-319 CWE-522 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-08-28T22:44:24.351Z
Updated: 2026-08-31T18:22:34.595Z
Reserved: 2026-06-17T16:44:40.995Z
Link: CVE-2026-55857
Updated: 2026-08-31T18:22:31.301Z
Status : Awaiting Analysis
Published: 2026-08-28T23:17:08.680
Modified: 2026-09-08T21:08:37.320
Link: CVE-2026-55857