Jackson 2.15 (v2.15.0-rc1 is out) has a default set of limits that it applies to inputs. Input Files that breach those limits will cause parse exceptions.

spring-boot will need to consider if those limits are ok or if you need to provide a way to configure the Jackson StreamReadConstraints.

https://javadoc.io/static/com.fasterxml.jackson.core/jackson-core/2.15.0-rc1/com/fasterxml/jackson/core/StreamReadConstraints.html