< go back to overview

Read-only share recipient can restore old versions of file

Platform: ownCloud Server

Versions: 8.0.14, 8.1.9, 8.2.7, 9.0.4,

Date: 7/19/2016

Risk level: Low

CVSS v3 Base Score: 3.1 (AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N)

CWE: Permission Issues (CWE-275)

HackerOne report: 146067


The restore capability of ownCloud was not verifying whether an user has only read-only access to a share. Thus an user with read-only access was able to restore old versions.

Affected Software

Action Taken

The permission check is now also performed on restore actions.


The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory:

  • Rudra Pratap Singh – Vulnerability discovery and disclosure.

This advisory is licensed CC BY-SA 4.0. Original source: nextcloud.com

Share this

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.