Answer in brief
CVE-2026-55215 records a High severity (CVSS 7.5) vulnerability in MariaDB Connector/Node.js: Connector leaks the cleartext password to an MitM despite `ssl: true`. The current sources do not mark it as known exploited. The current feed maps mariadb-corporation/mariadb-connector-nodejs (generic), mariadb (npm), mariadb (npm), mariadb (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps mariadb-corporation/mariadb-connector-nodejs (generic), mariadb (npm), mariadb (npm), mariadb (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| mariadb-corporation/mariadb-connector-nodejsgeneric | < 3.2.4 | Not reported |
| mariadbnpm | <3.2.4 | 3.2.4 |
| mariadbnpm | >=3.3.0,<3.3.3 | 3.3.3 |
| mariadbnpm | >=3.4.0,<3.4.6 | 3.4.6 |
| mariadbnpm | >=3.5.0,<3.5.3 | 3.5.3 |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.