3rd October 2020
Risk level: Low
CVSS v3 Base Score: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CWE: Denial of Service (CWE-400)
HackerOne report: 812754
A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user.
The error has been fixed.
It is recommended that the Nextcloud Server is upgraded to 20.0.0.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory: