A vulnerability was found in MongoDB Server up to 7.0.30/8.0.19/8.2.5 . It has been classified as critical . This issue affects some unknown processing. The manipulation of the argument lookup/graphlookup leads to use after free. This vulnerability is uniquely identified as CVE-2026-4148 . The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.