Content-Spoofing in "files" app (NC-SA-2017-006)
5th February 2017
Risk level: Low
CVSS v3 Base Score: 3.1 (AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N)
HackerOne report: 179073
The top navigation bar displayed in the files list contained partially user-controllable input leading to a potential misrepresentation of information.
- Nextcloud Server < 10.0.2 (CVE-2017-0888)
- Nextcloud Server < 9.0.55 (CVE-2017-0888)
The user-controlled content is now not trusted anymore unless the folder structure exists on the file system.
It is recommended that all instances are upgraded to Nextcloud 9.0.55 or 10.0.2.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
This advisory is licensed CC BY-SA 4.0.