AutoMapper versions prior to 16.3.0 and before 15.1.4 have a vulnerability where the MaxDepth recursion limit is not enforced when mapping destination types constructed via constructor parameters, such as positional records. This leads to uncontrolled recursion and a StackOverflowException that terminates the process. The flaw bypasses the MaxDepth mitigation introduced for a related vulnerability (CVE-2026-32933).