26th July 2019
Risk level: Low
CVSS v3 Base Score: 5.9 (AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N)
CWE: Authentication Bypass Using an Alternate Path or Channel (CWE-288)
HackerOne report: 490946
Creating a fake multi-account and aborting the process would redirect the user to the default account of the device without asking for the lock pattern if one was set up.
The error has been fixed.
It is recommended that users upgrade to version 3.6.1.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory: