CVE-2026-107383

High

Description

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductMariadb
PublishedOct 8, 2026
First seenOct 8, 2026

How to fix

Update
  • mariadb3.2.5, 3.3.4, 3.4.7, 3.5.4 or later

Affected products

ProductAffected versionsFixed in
mariadbnpmv < 3.2.5, 3.3.0 ≤ v < 3.3.4, 3.4.0 ≤ v < 3.4.7, 3.5.0-rc.0 ≤ v < 3.5.43.2.5, 3.3.4, 3.4.7, 3.5.4

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CVE-2026-107383 · Mariadb · Dark Radar