MariaDB Connector/Node.js: SQL injection in the text protocol when the session uses NO_BACKSLASH_ESCAPES

Summary

MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to 3.2.5, 3.3.4, 3.4.7, and 3.5.4, text-protocol escaping always prefixes quotes with a backslash and does not honor the session's NO_BACKSLASH_ESCAPES mode, including in Connection.escape(). When that mode is enabled, the backslash is an ordinary character, so an attacker-controlled placeholder value can close the SQL string literal and inject arbitrary SQL with the application's database privileges. The vulnerable configuration may be enabled server-wide, through connector initialization options, or with an application-issued SET sql_mode; execute() and batch() use binary protocols and are not affected. This issue is fixed in versions 3.2.5, 3.3.4, 3.4.7, and 3.5.4.

Timeline

1. Oct 8, 2026, 6:38 PM UTCCVE published
2. Oct 9, 2026, 11:45 AM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 9, 2026, 11:45 AM UTCRecord last updated

Affected versions

• mariadb-corporation mariadb-connector-nodejs

  fixed in 3.2.5; From 3.3.0 · fixed in 3.3.4; From 3.4.0 · fixed in 3.4.7; From 3.5.0-rc.0 · fixed in 3.5.4

• mariadbBitnami

  fixed in 3.2.5; From 3.3.0 · fixed in 3.3.4; From 3.4.0 · fixed in 3.4.7; From 3.5.0 · fixed in 3.5.4

• mariadb-minBitnami

  fixed in 3.2.5; From 3.3.0 · fixed in 3.3.4; From 3.4.0 · fixed in 3.4.7; From 3.5.0 · fixed in 3.5.4

• mysql-clientBitnami

  fixed in 3.2.5; From 3.3.0 · fixed in 3.3.4; From 3.4.0 · fixed in 3.4.7; From 3.5.0 · fixed in 3.5.4

• mariadbnpm

  fixed in 3.2.5

• mariadbnpm

  From 3.3.0 · fixed in 3.3.4

• mariadbnpm

  From 3.4.0 · fixed in 3.4.7

• mariadbnpm

  From 3.5.0-rc.0 · fixed in 3.5.4

References 11