CVE-2026-8063 — Post-auth null pointer dereference when aggregating against a view with empty search pipeline
An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view. When resolving a view, the server inspects the aggregation pip…
Published: 2026-05-07 · CVSS: 7.1 · CVSS 4.0
An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view. When 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. This issue affects MongoDB Server 8.2 versions prior to 8.2.7.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7