12th November 2019
Risk level: Low
CVSS v3 Base Score: 5.9 (AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L)
CWE: Violation of Secure Design Principles (CWE-657)
HackerOne report: 672623
Violation of Secure Design Principles in the iOS App 2.23.0 causes the app to leak its login and token to other Nextcloud services when search e.g. for federated users or registering for push notifications.
The error has been fixed.
It is recommended that the iOS App is upgraded to 2.24.0.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory: