A vulnerability described as problematic has been identified in MongoDB Server up to 7.0.34/8.0.23/8.2.9/8.3.2 . The impacted element is an unknown function of the component Aggregation Handler . Executing a manipulation of the argument exchange can lead to reachable assertion. This vulnerability is tracked as CVE-2026-9749 . The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.