A lack of CCTV at the Pope's residence and lax controls over people entering the city state were among the findings of a team of experts from Spain's Interior Ministry, who described "evident and worrying vulnerabilities" needing urgent attention.
The report was obtained by the Italian journalist Gianluigi Nuzzi who published these findings in his new book about the Vatican, 'Universal Judgement'.
The report revealed vulnerability to the Pope's security at his home, including from WiFi as well as reportedly flimsy front doors.
Pope Francis gave up the Vatican's isolated papal apartment when he was elected in 2013, in favour for a bedroom at the bustling Santa Marta, where visiting prelates stay, reportedly causing problems for his minders and security team.
Although the secret report was written in 2014, Nuzzi said his sources claim not much has changed and many of these security concerns are still as relevant today as they were five years ago.
Another security concern was raised this week when a new app, launched by the Vatican, the "E-Rosary" app allowed intruders to find the names and birthdays of subscribers. The Vatican has resolved the issue.