CVE-2026-1850: MongoDB

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Complex queries can cause excessive memory usage in MongoDB Query Planner resulting in an Out-Of-Memory Crash.

Affected products

• MongoDB MongoDB: from 8.0.0, before 8.0.18 (fixed in 8.0.18); from 8.2.0, before 8.2.4 (fixed in 8.2.4)

Published 2026-02-10. Last modified 2026-06-17.