CVE-2019-2393: MongoDB

Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days.

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries, which use $lookup and collations. This issue affects MongoDB Server v4.2 versions prior to 4.2.1; MongoDB Server v4.0 versions prior to 4.0.13 and MongoDB Server v3.6 versions prior to 3.6.15.

Affected products

• MongoDB MongoDB: from 3.6.0, before 3.6.15 (fixed in 3.6.15); from 4.0.0, before 4.0.13 (fixed in 4.0.13); from 4.2.0, before 4.2.1 (fixed in 4.2.1)

Published 2020-11-23. Last modified 2026-06-17.