8th May 2017
Risk level: Low
CVSS v3 Base Score: 3.5 (AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N)
CWE: Information Exposure Through Directory Listing (CWE-548)
HackerOne report: 203594
A logical error caused disclosure of calendar and addressbook names to other logged-in users. Note that no actual content of the calendar and adressbook has been disclosed.
The error has been fixed and regression tests been added.
It is recommended that all instances are upgraded to Nextcloud 11.0.3.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory: