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Content-Spoofing in "dav" app (NC-SA-2016-011)

10th October 2016

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)

CWE: User Interface (UI) Misrepresentation of Critical Information (CWE-451)

HackerOne report: 149798


The exception message displayed on the DAV endpoints contained partially user-controllable input leading to a potential misrepresentation of information.

Affected Software

Action Taken

The user-controlled content has been removed from the exception message.


It is recommended that all instances are upgraded to Nextcloud 9.0.54 or 10.0.1.


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.

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