From Artifactory version 4.8 on, the following API requires at minimum, a user with manage permissions on the specified maven repository. This appears to not be true and to only work with an admin user.
Create maven repository
Setup permission for a non-admin user to manage this repository
Run the following API
curl -uuser -XPOST http://art.com/artifactory/api/maven?repos=libs-release-local&force=1
**See a 403 be returned
Run same API with admin user successfully