No. Due to rights issues and licensing agreements, much of our content is geofenced, including that content which appears on the Gem app or website.
This means that it is only accessible to those within Canada.
However, you can still access a selection of CBC programming while outside of Canada without any restrictions.
The National (cbc.ca)
The Fifth Estate (Youtube)
Here and Now (Youtube)
Land and Sea (Youtube)
Fit Class (Youtube)