Description
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 fingerprint validation. In lib/cmd/handshake/auth/handshake.js, a server that selects mysql_clear_password as the initial authentication plugin can receive the password before the post-TLS identity check. In lib/cmd/handshake/authentication.js, an authentication switch can evaluate the previous plugin instead of the requested target plugin, allowing mysql_clear_password to send the credential first. An active man-in-the-middle can present a self-signed certificate, capture the database password, and use it to authenticate directly even though the connector later rejects the server and closes the connection. This issue is fixed in versions 3.3.3, 3.4.6, and 3.5.3.
Published: 2026-08-28
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-cqhc-2h57-wpxf MariaDB's connector leaks the cleartext password to an MitM despite `ssl: true`
History

Tue, 01 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 31 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Mariadb-corporation
Mariadb-corporation mariadb-connector-nodejs
Vendors & Products Mariadb-corporation
Mariadb-corporation mariadb-connector-nodejs

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description 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 fingerprint validation. In lib/cmd/handshake/auth/handshake.js, a server that selects mysql_clear_password as the initial authentication plugin can receive the password before the post-TLS identity check. In lib/cmd/handshake/authentication.js, an authentication switch can evaluate the previous plugin instead of the requested target plugin, allowing mysql_clear_password to send the credential first. An active man-in-the-middle can present a self-signed certificate, capture the database password, and use it to authenticate directly even though the connector later rejects the server and closes the connection. This issue is fixed in versions 3.3.3, 3.4.6, and 3.5.3.
Title MariaDB Connector/Node.js: Connector leaks the cleartext password to an MitM despite `ssl: true`
Weaknesses CWE-295
CWE-522
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Subscriptions

Mariadb-corporation Mariadb-connector-nodejs
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-01T01:56:18.689Z

Reserved: 2026-06-16T16:16:32.627Z

Link: CVE-2026-55215

cve-icon Vulnrichment

Updated: 2026-09-01T01:56:13.692Z

cve-icon NVD

Status : Received

Published: 2026-08-28T20:18:26.353

Modified: 2026-09-01T02:16:58.140

Link: CVE-2026-55215

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T11:20:06Z

Weaknesses