A vulnerability was found in MongoDB Server up to 7.0.30/8.0.19/8.2.5 . It has been classified as problematic . Impacted is an unknown function of the component Aggregation Handler . This manipulation of the argument lookup causes double free. This vulnerability appears as CVE-2026-4358 . The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.