{"id":"BIT-mongodb-2026-8063","summary":"Post-auth null pointer dereference when aggregating against a view with empty search pipeline","details":"An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view.\n\nWhen resolving a view, the server inspects the aggregation pipeline to determine whether it begins with an Atlas Search stage. For $rankFusion and $scoreFusion, this inspection reads the first element on each stage’s input pipeline array without first verifying that the array is non-empty. Supplying an empty pipeline causes a null pointer dereference and crashes the server.\n\nThis issue affects MongoDB Server 8.2 versions prior to 8.2.7.","aliases":["CVE-2026-8063"],"modified":"2026-09-08T08:48:14.547283846Z","published":"2026-05-12T08:52:12.873Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*"]},"references":[{"type":"FIX","url":"https://jira.mongodb.org/browse/SERVER-121851"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8063"}],"affected":[{"package":{"name":"mongodb","ecosystem":"Bitnami","purl":"pkg:bitnami/mongodb"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.2.0"},{"fixed":"8.2.7"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mongodb/BIT-mongodb-2026-8063.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}