Answer in brief
CVE-2026-55854 records a Medium severity (CVSS 5.9) vulnerability in MariaDB Connector/Node.js: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials in mariadb. 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 5.9. 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 || >= 3.3.0, < 3.3.3 || >= 3.4.0, < 3.4.6 || >= 3.5.0, < 3.5.3 | Not reported |
| 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 |
| mariadbnpm | <3.2.4 | 3.2.4 |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 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 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.
Quoted source text, attributed separately from HOL analysis.