MariaDB Connector/Node.js: SQL injection through object keys in SET expansion (permitSetMultiParamEntries)

Summary

MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. From 3.2.0 until 3.2.5, 3.3.4, 3.4.7, and 3.5.4, applications that enable permitSetMultiParamEntries can pass objects whose keys are expanded into a SQL SET clause without being processed by escapeId. An attacker-controlled key containing a backtick can close the quoted identifier and cause the remainder of the key to be interpreted as SQL. This can update columns the application did not intend to expose and can append arbitrary SQL with the database user's privileges. The option is disabled by default, and serialized-object handling used when it is disabled is 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, 6:32 PM UTCCVE published
2. Oct 9, 2026, 6:36 PM UTCCISA SSVC assessment

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

3. Oct 9, 2026, 6:36 PM UTCRecord last updated

Affected versions

• mariadb-corporation mariadb-connector-nodejs

  From 3.2.0 · 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

  From 3.2.0 · 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

  From 3.2.0 · 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

  From 3.2.0 · 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

  From 3.2.0 · 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