ApostropheCMS: Authenticated projection-exclusion prototype-member deletion in @apostrophecms/db-connect causes process-wide denial of service
@apostrophecms/db-connect ships an in-memory MongoDB emulation used by its SQLite, PostgreSQL, and multipostgres adapters. Its unsetNestedField helper walks an attacker-controlled dotted field path with no segment validation and calls delete on the resolved property. A low-privileged authenticated user (any role holding view-draft, which every editor and contributor has; reduced to any logged-in user when guestApiAccess is enabled) can send a piece-type REST GET request whose project query builder contains an …