CVE-2026-107383: MariaDB-Corporation MariaDB-Connector-Node.js

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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, the GeoJSON Polygon and MultiPolygon binary encoders size a Buffer.allocUnsafe() allocation from each ring's numeric length before confirming that the ring is an array. A malformed non-array ring can therefore reserve bytes that the writing loop skips, and the connector sends the full buffer through execute() or batch(), disclosing uninitialized Node.js heap data into a database value. The persisted data can include other users' content, session material, database credentials, or TLS key material and may propagate to backups and replicas. The text-protocol query() path is not affected. This issue is fixed in versions 3.2.5, 3.3.4, 3.4.7, and 3.5.4.

Affected products

• MariaDB-Corporation MariaDB-Connector-Node.js: before 3.2.5 (fixed in 3.2.5); from 3.3.0, before 3.3.4 (fixed in 3.3.4); from 3.4.0, before 3.4.7 (fixed in 3.4.7); from 3.5.0-rc.0, before 3.5.4 (fixed in 3.5.4)

Published 2026-10-08. Last modified 2026-10-08.