CVE-2026-13073: MongoDB

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

An authenticated user with read-only privileges can cause the mongod process to terminate abnormally by issuing a crafted aggregation command, resulting in denial of service for all connected clients until the process is restarted. The issue stems from an internal engine selection inconsistency triggered by a specific combination of aggregation options.

Affected products

• MongoDB MongoDB: from 8.0.0, before 8.0.28 (fixed in 8.0.28)

Published 2026-07-22. Last modified 2026-08-18.